WOLF MOON
Everything in Scott McCall's life is starting to fall into place. He gets a spot on the First Line of his Lacrosse team and a date with the woman of his dreams. When he gets bitten by a werewolf, the people around him could be in danger.

SECOND CHANCE AT FIRST LINE
Scott and Stiles discover that the werewolf curse can also be triggered by anger, besides the full moon. With the lacrosse game coming up, Jackson and his girlfriend, Lydia, hope to humiliate Scott. Will Scott be able to control his rage?

PACK MENTALITY
Scott is shaken when his vivid dream of a mauling aboard a school bus turns out to have actually happened. Scott turns to Derek for help, but Derek warns him that his help will not be free. Meanwhile, Scott's long awaited date with Allison turns into a group date. Scott gets bowling help from Allison.

MAGIC BULLET
Allison's aunt comes to town and shoots a shadowy werewolf figure with a special bullet that she estimates will kill it within 48 hours. Derek is the one hit and insists that Scott and Stiles help him.

THE TELL
Lydia and Jackson witness a werewolf attack at the video store. Stiles is worried for his father, the sheriff. Allison's aunt gives Allison a family heirloom and encourages her to use it to learn more about the family history. Scott and Allison play hooky on her birthday. Derek confronts Jackson about what he saw the night before. Derek gets a surprise visit. At the parent teacher conference, Scott's mom and Allison's father find out they both skipped school that day. After the parent teacher conference, someone pulls a gun and uses it.

HEART MONITOR
Scott and Stiles are on the outs after Stiles' dad gets hurt, but when Derek insists that Scott avoid Allison, Scott turns to Stiles to help him master his anger with the help of a heart monitor. Meanwhile, Jackson is feeling the effects of having been scratched and approaches Allison claiming to want to get to know her and Scott better.

NIGHT SCHOOL
Responding to Scott's howl, the alpha savages Derek and traps Scott and Stiles in their high school. Events escalate even further when Allison, Jackson and Lydia are lured to the school as well with a phony text message.

LUNATIC
As Scott's second full moon approaches, he gives in to his animal urges and hurts Stiles, but Stiles gets a measure of revenge in locking him up. Meanwhile, Jackson continues to try and get closer to Allison. The Argents learn that Scott somehow knew Derek.

WOLF'S BANE
Jackson discovers that he has aconite poisoning and thinks he has figured out what is up with Scott. Meanwhile, Derek hides from the manhunt in Stiles' room while Stiles and Scott try to get Allison's necklace and any clues that may lead to the identity of the alpha. Teammate Danny lends Stiles his internet expertise to help in the search.

CO-CAPTAIN
The Alpha finally reveals himself to Scott and gives him an idea of why he has killed certain people. Argent stages an encounter thinking that Jackson may be a werewolf. Meanwhile, Allison discovers a bit more about her family's secrets and confronts Lydia about her kissing Scott.

FORMALITY
Kate Argent has Derek chained up in a basement following her attack on his house and shows him off to Allison before torturing him. The coach has banned Scott from the Spring Formal in exchange for not dropping him from the team for academic reasons. Scott intimidates Jackson into escorting Allison to the dance, and she asks Lydia to escort Stiles.

CODE BREAKER
After Allison sees her father, Chris Argent, fail in his attempt to run Scott down with his car, Chris Argent decides to send Allison and his sister Kate to Washington. Stiles convinces Peter Hale, who is the alpha werewolf, to spare Lydia's life after he bites her. Peter Hale agrees to Stiles' request, but in return Stiles must help him locate Derek. Meanwhile, Jackson is called to get Lydia to the hospital. Scott must cope with the girl he loves knowing his secret.

OMEGA
Lydia vanishes from the hospital after a disturbing hallucination, and is found naked in the woods two days later. Isaac, a tormented teen abused by his father, is attacked while working in his father's cemetery; Derek appears to save him. Jackson begins bleeding black blood and is told by Derek that his body is resisting the bite. Derek forces Scott to watch Gerard kill an innocent werewolf and declare that they will eliminate all werewolves to avenge his daughter Kate's death.

SHAPE SHIFTED
Isaac's father is murdered by a strange creature. Scott discovers Isaac is now a werewolf. Isaac is then taken into custody for his father's murder. When it is revealed that the werewolf hunters are going to kill Isaac, Scott, Stiles and Derek plan to save him, as he is innocent. At the jail, Isaac transforms and breaks out, advancing on Stiles. Derek, being the Alpha werewolf, is able to force him into submission. Jackson, who had set up a video camera overnight to record his transformation, is upset to learn that nothing happened.

ICE PICK
Chris begins Allison's training to become a werewolf hunter. At school, Erica, an epileptic girl, has a seizure and ends up in the hospital. There, Derek delivers the bite upon the promise that her illness will vanish. Dr. Deaton finds a dead hunter in his office and Chris wants him to find out what happened. Scott discovers Boyd is now a werewolf and is forced into a fight with Derek, Erica, and Isaac. Jackson is shocked when he exhibits inhuman strength.

ABOMINATION
When Stiles takes his jeep in for repair, he is paralyzed by the creature's toxin and witnesses it kill the mechanic. Jackson discovers there are actually over 2 hours of missing footage from the night he recorded himself. The creature attacks Derek and paralyzes him. Derek falls into the pool and Stiles jumps in to save him. They discover the creature cannot swim, so they stay in the water until Scott saves them. Derek realizes that the creature is a Kanima. Gerard reveals he knows Scott's secret and blackmails him.

VENOMOUS
Convinced that Lydia is the Kanima, since she displayed immunity to the creature's toxin, Derek wants to kill her. Scott, Allison, Stiles and Jackson try to protect her together. After a fight with Derek's pack, it is revealed to everyone that Jackson is the Kanima.

FRENEMY
Derek engages the Kanima in a fight interrupted by Chris and Gerard. The Kanima does not attack Gerard, instead seeming to communicate with him, which confuses Chris. After the Kanima paralyzes Danny and 6 others at a gay club, Jackson passes out, so Stiles locks him up in a police van. However, Jackson transforms and escapes. Allison discovers the Kanima seeks a master, revealing that Jackson is being controlled by someone.

RESTRAINT
A fight between Scott and Jackson lands everyone involved in detention. Jackson transforms, injures Matt and Erica, and leaves a warning from his master. Erica has a seizure as a result of the Kanima's venom and Scott and Stiles rush her to Derek. Lydia meets the strange boy she has been seeing around, only for him to reveal himself to be a younger version of Peter Hale. Lydia realizes that the young boy was a part of her imagination and that Peter has been communicating with her via hallucination all along.

RAVING
Jackson is commanded by his master to attend a secret rave, where his next target is. Stiles and Sheriff Stilinski realize there is a pattern in the murders: all victims had been in the class of 2006. Stiles's father loses his job because Stiles's irresponsible behavior reflects badly on the county. Scott is attacked by Victoria, who attempts to kill him. Isaac drugs Jackson, and he and Erica join Stiles in interrogating his master, who speaks through him. Jackson transforms, successfully killing his target. Derek saves Scott, biting Victoria in the process.

PARTY GUESSED
Stiles realizes that all the murder victims were on the Beacon Hills High swim team and the coach at the time was Isaac's father. At Lydia's birthday party, Lydia spikes the punchbowl with wolfsbane petals, causing all the party attendees to hallucinate the things they fear most. She attacks Derek and brings him to the Hale house, where Peter uses Derek's blood to come back to life. Victoria kills herself so that she would not become a werewolf. It is revealed that Matt is the Kanima's master.

FURY
Matt takes Scott, Stiles, Melissa and Sheriff Stilinski hostage. Gerard persuades Allison to exact revenge on Derek for bringing her mother to suicide. Matt reveals to Scott his reason for the murders: in 2006, all the victims were at a party at Isaac's house, where Matt had come to meet Isaac. They had thrown Matt in the pool and left him to drown despite him yelling that he can't swim. Melissa finally sees Scott as a werewolf. Gerard drowns Matt in the lake and becomes the Kanima's new master.

BATTLEFIELD
Boyd and Erica leave Derek, terrified of the Argent werewolf genocide. At the championship lacrosse game, Gerard threatens to murder someone with the Kanima if Scott does not bring Derek to him by the game's end. Allison ruthlessly shoots Boyd with arrows until the werewolves are saved by Chris, who is upset by Allison's actions. On the field, Stiles begins a massive winning streak, and their team wins. Just then, Jackson is found bleeding and unresponsive; he has stabbed himself with his own claws. Sheriff Stilinski makes a grim discovery: Stiles has gone missing.

MASTER PLAN
Stiles is kidnapped by Gerard, who also has Boyd and Erica hostage; Stiles escapes. Chris, realizing that Gerard is the true enemy, sets Boyd and Erica free, and helps Scott and Isaac take Jackson's body to Derek. Jackson turns into the Kanima, and a battle ensues. Gerard reveals he has cancer and had planned to cure himself by becoming an Alpha werewolf. However, when Gerard's body rejects the bite, Scott reveals he had replaced Gerard's cancer pills with mountain ash. Jackson is killed by Peter and Derek but comes back to life as a blue-eyed werewolf. Allison tearfully breaks up with Scott, but he assures her he'll wait. Peter reveals a pack of Alpha werewolves have come to town, indicating new danger. This Alpha pack captures Boyd and Erica as they flee.

TATTOO
Isaac wakes up with amnesia but is rescued from the Alpha pack by a mystery girl. Jackson has moved to London. Allison and her father have quit being werewolf hunters, and Scott is working on being a better person. Derek has been looking for Boyd and Erica, who were captured by the Alpha pack. Something eerie is causing the animals of Beacon Hills to go insane, and Dr. Deaton concludes that the animals are killing themselves intentionally. Derek gives Scott the tattoo he has been wanting to get, and explains about the Alpha pack's leader Deucalion, who is blind but the strongest and most lethal.

CHAOS RISING
Stiles' childhood friend, Heather, is attacked and goes missing. The guys help Isaac recover his memory, and it is revealed that he had found Boyd and another female werewolf, being kept in an abandoned bank vault. However, Erica may already have been killed. When Derek and Scott break in to save them, Derek recognizes the other female werewolf to be his little sister Cora, previously thought dead. Stiles and Peter discover that Boyd and Cora have been kept from transforming for 3 months. Wild and bloodthirsty, Boyd and Cora almost kill Derek and Scott until Allison saves them by setting the wolves free.

FIREFLIES
Scott reveals to Allison that her mother tried to kill him, while Derek discovers Erica's body. Derek, Isaac, and Scott seek help from Chris to capture Boyd and Cora before they kill someone. Lydia finds a dead boy, and calls Stiles for help. The guys trap Boyd and Cora in the high school's boiler room but discover Jennifer is inside; Derek saves her. Stiles discovers Heather's body in the morgue, killed the same way the boy was. As the two were both virgins, Stiles concludes that someone is murdering them to offer as human sacrifices, just as Sheriff Stilinski discovers a third dead girl, killed the same way.

UNLEASHED
The body of the newest murder victim is found. The Alphas attack Derek, and Deucalion offers him a proposition: join the Alpha Pack by killing his own Betas and absorbing their power. Stiles, Lydia and Deaton figure out that the serial killer is a Darach, a dark or evil druid. Mr. Harris is murdered next, though he seemed to know the killer. Derek, aware Deucalion wants him to kill his pack, kicks Isaac out, so Isaac moves in with Scott.

FRAYED
The Beacon Hills croscountry team is heading to a croscountry meet aboard a bus, which Allison and Lydia are following to keep an eye on Scott. Scott is suffering from a nasty injury that isn't healing; a result of a preemptive strike on the Alphas the night before. The battle leaves everyone under the impression that Derek is dead, which Scott feels responsible for. The Alphas take a wounded Ennis to Deaton in hopes to heal him. However, Deucalion kills Ennis and absorbs his power. Allison stitches up Scott's wound, allowing him to finally heal. Back in Beacon Hills, Jennifer is startled when a wounded Derek appears and passes out.

MOTEL CALIFORNIA
The team takes refuge at an eerie motel for the night, where Scott and the gang undergo strange experiences. Boyd, Ethan, and Scott suffer various types of hallucinations that drive them to attempting suicide while Isaac is triggered into a PTSD flashback. All four werewolves are saved by Stiles and Lydia. Lydia realizes that the Darach caused this to happen, intending to use the wolves as sacrifices. Meanwhile, Jennifer helps to heal Derek when the two have sex. Chris visits a wheelchair-bound Gerard in regards to his uncle, who committed suicide in 1977, wanting to know which Alpha had bitten him. Gerard reveals that it was Deucalion.

CURRENTS
The Darach targets Deaton as the next sacrifice, leaving him hanging by his wrists to die. The Alpha Pack attacks Derek while Scott saves Deaton, with the help of Sheriff Stilinski. Deaton reveals Scott is a "True Alpha": a werewolf who rises to Alpha status purely by their own willpower and good character. This is extremely rare, happening every 100 years, which is why Deucalion is after Scott. Kali forces Derek to kill Boyd, which also reveals Erica's death to him, and causes Derek to break down.

VISIONARY
Seeking answers, Scott, Allison, Stiles and Cora hear stories told by two unlikely narrators (Peter and Gerard) and discover a secret about the color of a werewolf's eyes, that they change from yellow to blue when an innocent life is taken. The tale told by Peter focuses on Derek when he was a teenager. It is revealed that Derek fell in love with a girl named Paige, who he was forced to kill in order to end her suffering from a bite from an Alpha werewolf (Ennis); killing Paige darkened his soul and changed the color of his eyes. The tale told by Gerard explores the origins of the feud between the Hunters and the Packs, and it is revealed that Gerard was the one who blinded Deucalion, who was seeking peace with Gerard, during a meeting between the two sides. Also, Dr. Deaton and Ms. Morrell are revealed to be emissaries, or modern day druids, the ambassadors between the Packs and the rest of humanity.

THE GIRL WHO KNEW TOO MUCH
Allison and Issac learn that the Darach is planning to sacrifice guardians next, they think that her father is involved with the murders, but end up discovering that he has been tracking the Darach for a while now. Meanwhile, Scott and Stiles want to use Lydia to solve the murders. Lydia discovers that Jennifer Blake is the Darach; Jennifer is about to kill her, when Lydia screams and she realizes that Lydia is actually a banshee, aka "the Wailing Woman"; this explains her attraction and inclination towards the supernatural. Stiles' dad tries to save Lydia, but is kidnapped by Jennifer, as he is a guardian. Scott goes to Ms. Morrell for some guidance; Morrell reveals that Deucalion's plan for him is that either Scott will join the Alpha Pack willingly as a True Alpha, or Deucalion will force Scott to kill, destroying his potential to become a True Alpha.

THE OVERLOOKED
After Jennifer takes Stiles' dad, Derek and Scott capture her and bring her to the hospital in order to save Cora's life, where they are trapped by the Alphas. It is then revealed that Jennifer is in fact Kali's former emissary and that the Alphas want her dead. With the help of Peter, Allison, Chris, Stiles, and Isaac, they manage to fight against the Alphas and escape, but Jennifer kidnaps Scott's mom, since she is a guardian. Feeling that there is no other way, Scott joins Deucalion to find Jennifer, who promises to help find his mother and Stiles's father in return.

ALPHA PACT
After escaping the Alphas, Derek and Peter try to find a way to save Cora, while Allison, Isaac, and Stiles discover that Jennifer has named Chris Argent as her last sacrifice. Sacrificing himself to save Allison, Chris hands himself over to Jennifer. The group discover that Jennifer is holding her victims in the root cellar. Scott and the Alpha pack hunt down Ms. Morrell; Deucalion injures her with the blade in his cane. Peter tells Derek that as an Alpha, he can heal one of his own, even at the brink of death. Choosing family over power, Derek heals Cora, losing his Alpha powers in the process. Stiles and Deaton find Scott and convince him that they need to be 'temporarily' dead in order to find out where their parents are. Scott, Allison, and Stiles are then put into tubs of ice and pushed down.

LUNAR ELLIPSE
Scott, Allison, and Stiles awaken and discover where the Nemeton is located. Jennifer kills Kali and badly wounds the twins. Allison, Isaac, and Stiles locate the Nemeton and rescue the three parents. The lunar eclipse begins, and all the werewolves become powerless. Jennifer gives Deucalion his sight back so he can see her true form and then tries to kill him, but is stopped by Derek. Jennifer attacks Derek, but the eclipse ends and the werewolves' power returns. Scott defeats Jennifer and becomes a True Alpha. Deucalion slashes Jennifer's throat, apparently killing her. Jennifer is revealed to be barely alive, having survived Deucalion's attack, but is confronted by Peter. Peter kills her, claiming that he has always been the Alpha.

ANCHORS
As a result of their "temporary deaths", Scott, Stiles, and Allison are now experiencing vivid hallucinations. Allison is haunted by visions of Kate, her dead aunt; Stiles has terrible nightmares and is unable to read even when awake; and Scott has begun to see his shadow as that of an Alpha werewolf. Scott befriends a new student named Kira Yukimura, whose father has become the new history teacher at Beacon Hills High School. Overhearing a discussion involving the recent psychological problems that Scott, Stiles and Allison have been having, Kira identifies the condition as a spiritual state known as Bardo, the final stage of which ends in the death of the person afflicted. Scott and Stiles search a crime scene of the reopened case for clues, finding a coyote whose eyes glow blue. Scott believes the coyote is one of the family members presumed dead, a girl named Malia.

MORE BAD THAN GOOD
Scott and his friends attempt to track down the were-coyote Malia before her father kills her, in order to change her back to a human. Isaac becomes caught in a coyote trap, while Stiles saves Lydia from another trap. Allison uses a tranquillizer dart to sedate Malia's father. Scott tracks down Malia and embraces his Alpha powers in order to transform Malia back into a human with an Alpha roar, which also gives Isaac the strength to break the trap on his leg. Sheriff Stilinski then reunites Malia with her father. Stiles discovers that he has regained the ability to read. Meanwhile, Peter and Derek are freed from their captors by an unlikely ally, Braeden, who reveals that she was hired to free them by Deucalion. At the Nemeton, someone releases a swarm of fireflies that morph into three mysterious figures.

GALVANIZE
William Barrow, an electrical engineer turned mass murderer, escapes during a surgery at the hospital and hides out in the school. He abducts Kira, takes her to a power plant and attempts to electrocute her, but she inexplicably deflects the electricity, killing Barrow and shutting down the power for the entire town. Just after the blackout, five hooded figures attack Isaac.

ILLUMINATED
Isaac describes the hooded figures that attacked him to Allison and her father. Kira reveals to Scott that her body emanates a glowing aura when a photo is taken of her, and with the help of Stiles, the two break into the Sheriff's office and erase similar photos from Kira's cell phone. Danny and Ethan throw a Halloween party in Derek's empty loft. During the party, Scott realizes that Kira's "aura" resembles a fox, and Allison discovers what appears to be a reverse number "5" mark behind Isaac's ear. Ethan and Lydia are also attacked by the hooded figures and marked the same way. Stiles discovers that his handwriting matches the coded message written on the chalk-board, instructing Barrow to kill Kira.

SILVERFINGER
Allison's father recounts his time in Japan when he was eighteen; he and members of the Japanese yakuza encountered the hooded figures, which are revealed to be called Oni. He, Allison and Isaac plan to infiltrate the lair of the only other survivor, a man called Katashi in order to gain answers. Worrying about his sanity, Stiles seeks help from Melissa. She discovers that his symptoms are identical to those of his deceased mother, Claudia. Scott, Kira, Derek, the twins, Melissa, and Agent McCall take sanctuary in Scott's home just before the Oni attack. The Oni are forced out of the house. Katashi warns Chris to let the Oni destroy the Nogitsune. The Oni breach Scott's house, but do not harm him or Kira. Stiles awakens and is confronted by the Oni, but he destroys one of them.

RIDDLED
Stiles makes a panicked late-night phone call to Scott after he finds himself in a strange location with his leg in a steel trap. Lydia leads them to the mental health center where Barrow was committed, however Stiles is not there. Scott's mother and father find Stiles, who had been sleepwalking. Derek and Kira find Stiles's baseball bat at the power station, and Derek deduces that Kira was indirectly responsible for the Nogitsune taking over Stiles's body. Stiles has an MRI scan to test for frontotemporal dementia, the same illness that caused his mother's death. The power then goes out, due to the Nogitsune having damaged the wiring on the roof the previous night. The Nogitsune, now in complete control of Stiles's body, confronts the remaining Oni, who are revealed to be led by Kira's mother.

LETHARIA VULPINA
Deaton retrieves a poisonous plant that will aid him in defeating the Nogitsune. Derek and Chris Argent are arrested by Agent McCall for the murder of Katashi after being framed by someone. Stiles, who is still missing, reappears in the school basement. After finding a map of the croscountry trails, he, Scott, Aiden and Ethan realize that the path has been booby trapped by Stiles. The boys are successful in stopping the runners from being injured but Coach Finstock is shot with an arrow. Allison and Lydia seek the aid of Peter Hale. He asks for Lydia's help in finding the memory that his sister took away from him. Lydia discovers that Peter is a father. The Oni, attack Stiles, Scott and Kira at the vet's office. They manage to escape but Stiles - still possessed by the Nogitsune - knocks Kira unconscious.

ECHO HOUSE
Stiles checks himself into Eichen House, a mental hospital. Chris Argent and Deaton are working together. Deaton requires a hidden scroll in his quest to cure Stiles. In the mental hospital, Stiles encounters Malia Tate, who isn't pleased to be reunited. After group therapy, Stiles is told that he must stay awake. Stiles enlists Malia in a plan to access the basement. Malia rescues Stiles and the two head to the basement together, where they share a passionate encounter. Soon after, Malia realizes that the wall with the kanji carved into it is hollow, and the Nogitsune lies behind it. The Nogitsune gives Stiles an ultimatum; allow it in or watch Malia die, and allows the Nogitsune to possess him again. Deaton reads the scroll and says that the Nogitsune's host body needs to change its form in order to remove it.

THE FOX AND THE WOLF
Kira learns that her mother is actually a Kitsune who is close to 900 years old. During the second world war, she was in a Japanese internment camp, and fell in love with a young medic. A riot breaks out, and the medic is badly burned by a molotov cocktail thrown. Noshiko, assumed to be dead but actually healing and unable to move, calls upon a Nogitsune to possess her so that she can have her revenge, but it possesses her lover's body instead. Kira, as a Thunder Kitsune, is able to mend the broken katana, and her mother gives it to her to stop the Nogitsune once again. Noshiko reveals that she hid the Nogitsune in the roots of the nemeton, meaning that Scott and his friends may have been responsible for the reawakening of the Nogitsune. Derek, Chris, Allison and Sheriff Stilinski try to track down Stiles, hoping to bring him back to normal.

DE-VOID
Sheriff Stilinski faces a review board, but Scott's father saves his job at the last minute. Mr. McCall reveals to Sheriff Stilinski that he only came back to Beacon Hills to make amends with his son. Meanwhile, the Nogitsune stabs himself and releases a swarm of flies, sending them after Aiden, Ethan, Isaac and Derek. Having been placed under the spell of the Nogitsune, Derek tries to get revenge over Chris, by covering him in gasoline and attempting to burn him; however Chris is able to free himself. Aiden, Ethan, and Isaac nearly kill each other but are saved by Kira and Allison. With guidance from Peter, Scott and Lydia are able to enter Stiles's mind, and manage to free Stiles from the Nogitsune's control. However, Lydia is kidnapped by the Nogitsune, which is now independent and looks exactly like Stiles.

INSATIABLE
While searching for Lydia in the woods, Aiden and Ethan are shot at by an unknown shooter with wolfsbane bullets, and are saved by Derek. Kira's mother tries to teach her the board game that Stiles was playing with the Nogitsune. Later, Kira's father discovers that the Nogitsune and Kira's mother play the game the same way. Lydia is taken to the internment camp by the Nogitsune; the group arrive and find Kira's mother and the Oni, who plans to kill the Nogitsune. The Nogitsune takes possession over the Oni and has them face off against Kira, Allison, and Isaac, while Scott and Stiles find Lydia and are shocked when she asks why they came when she told them not to. Allison manages to kill one of the Oni and is stabbed by another. Allison professes her love to Scott and dies in his arms.

THE DIVINE MOVE
The Oni, under the control of the Nogitsune, systematically and violently take control of the hospital, Sheriff's station, high school and Alan's animal clinic. Isaac and Mr. Argent realize that silver can actually destroy the Oni. Everyone shows signs of the poisoning seen in others attacked by the Oni. But Scott, Kira, Stiles and Lydia defeat the Nogitsune by realizing the attacks are an illusion. Scott bites the Nogitsune, following the instructions on the scroll stating that it cannot be both a fox and a wolf. The duplicate of Stiles that the Nogitsune was using as a body disintegrates, and Isaac traps the Nogitsune in a box made of Nemeton wood. Lydia then gets a feeling and runs outside to find that Aiden has been stabbed and now is lying dead in the arms of Ethan, his twin brother. Later, the injured people start healing and all seems well again in Beacon Hills. In a series of flashbacks, it is revealed that Kate Argent, whose throat was torn out by Peter's claws, is shown to be alive and is a supernatural being.

THE DARK MOON
Scott and his friends head into Mexico, looking for the Spanish hunter clan, known as the Calaveras, that were hunting Derek. The lead hunter, Araya, makes Scott realize that Kate Argent, Allison's presumed dead aunt, has returned and taken Derek. With assistance from Braeden, Scott and the group go in search of Derek in an abandoned town known as La Iglesia, said to be the home of supernatural creatures called the Nagual (werejaguars). When Stiles's jeep breaks down, Scott and Braeden carry on alone. They arrive in La Iglesia and enter an abandoned church buried beneath the town, but are attacked by a mysterious creature wearing bone armor. Meanwhile, a second creature attacks Malia and Kira in the desert. Both groups manage to escape their attackers, and Scott and Braeden find a teenage version of Derek buried in the church.

117
Years earlier, Peter teaches Derek how to control his shift, using an artifact known as the Triskelion. In the present day, Kate kills a gas station attendant, and appears to be unable to control herself when transformed. Scott and his friends return from Mexico and take Derek to Deaton, who is baffled by Derek's regression. Derek attacks Deaton and goes to his destroyed house, but is arrested. When Kate abducts Derek from Scott's house, Scott teams up with Peter to put an end to Kate's plan. Peter identifies the creatures that attacked Scott as Berserkers. Kate and Derek access the Hale family's vault under the high school, and Kate wants the Triskelion in order to learn control. Scott, Malia and Kira take on the Berserkers, but are defeated. Peter confronts Derek and Kate in the vault. Derek leaves to help Scott, while Peter explains that the Triskelion was only ever a trinket. With Derek gone, Peter and Kate fight, but are interrupted when an individual blinds them and steals a briefcase. Kate flees and Derek reverts to his normal age. Stiles and Lydia find Peter, and he reveals that 117 million dollars were stolen.

MUTED
Sean Walcott, a seemingly ordinary teenager, is attacked by a mouthless assassin known as the Mute; the Mute slaughters his family, but Sean is able to escape. Stiles and Scott meet a new freshman, Liam (Dylan Sprayberry), who excels on the lacrosse field; worried that their positions on the lacrosse team are in jeopardy, Stiles persuades Scott to use his werewolf abilities again on the field. Scott begins excelling again, but accidentally injures Liam. Deputy Parrish and Lydia investigate Sean's house, where they find a hidden meat locker full of frozen human corpses. Sean, identified as a wendigo, kills and eats one of the cops protecting him and takes Liam hostage on the hospital roof. Scott is forced to bite Liam to keep him from falling off of the roof, saving his life. The Mute kills Sean, and Scott realizes that his bite may have turned Liam into a werewolf.

THE BENEFACTOR
Peter is attacked and injured by the Mute. Scott and his friends attempt to plan a way to help Liam deal with the upcoming full moon. Deputy Parrish, Sheriff Stilinski and Derek discover that the Mute is an assassin hired by someone called the Benefactor. Scott and his friends lock up Liam and Malia at Lydia's lake house; unfortunately, Liam texted his friends that there was a party at the house. Lydia deals with the party, and discovers a soundproofed room in her house. Derek and Sheriff Stilinski locate the Mute at the high school, and avoid a claymore mine that the Mute planted. Peter eventually appears and kills the Mute. Stiles is able to help Malia gain control over her shift. Liam escapes, but Scott is able to subdue him with help from Chris Argent. At the party, a werewolf is killed by Violet, an agent of the Benefactor, along with her boyfriend Garrett. Lydia manages to decipher the code in the Mute's computer, using the keyword "ALLISON", which reveals that it's actually a "dead pool", a hit list of supernatural beings living in Beacon Hills, which includes all of their supernatural friends.

I.E.D.
Violet and Garrett kill another werewolf at the school, and then prepare to take down their next target during the first lacrosse scrimmage. Malia tries to help Lydia use her powers to find the next cipher key, but when Lydia is unsuccessful, they decide to contact Meredith Walker another banshee from Eichen House. Derek reveals to Chris that he is losing his powers. Scott, Stiles and Kira spend the game attempting to keep Liam safe, assuming that he is the assassins' target; however, Brett, a player from Liam's old school, is revealed to be a werewolf, and turns out to be Violet and Garrett's target. With help from Meredith, Lydia is able to decipher the second code, using the codeword "AIDEN", and is shocked to discover that the deadpool includes Deputy Parrish. Violet uses Brett as bait and tries to take down Scott, but he effortlessly overpowers her.

ORPHANED
Agent McCall recognizes Violet as a member of the Orphans, a group of teenage serial killers. Garrett attacks and poisons Liam, throws him into a well, and forces Scott to help him free Violet. However, Kate and the Berserkers have already abducted Violet, and Garrett is killed. Derek recruits Malia in an attempt to find the pack of the werewolves who have been killed by the assassins. Lydia, Stiles and Deputy Parrish go to Eichen House in an attempt to get Meredith's help in finding the last cipher key. She refuses, saying that the Benefactor has ordered her not to help them. Scott and Chris face off against Kate and the Berserkers, but are overpowered; during the fight, Scott discovers that Violet has been killed. Derek and Malia find Satomi's pack, only to discover that they are all dead. Liam howls a distress call to Scott, who is able to hear it and rescues Liam. Lydia deciphers the last part of the list, which includes Liam, Malia and Meredith. Scott and Stiles find the money that Garrett and Violet received from the Benefactor. Peter offers to teach Kate to control her shift.

WEAPONIZED
Derek rushes an injured Braeden to the hospital. A virus designed to kill werewolves is released during the PSATs, and the school is quarantined. Deaton is confronted by Satomi at the animal clinic; she explains that most of her pack have been wiped out by the virus, and she was the only one who was immune. After conducting an autopsy on a werewolf, Deaton figures out that the virus is a version of canine distemper. With help from Satomi and Derek, they realize that Reishi tea leaves are the cure, and that there is a jar of them in the Hale vault. Scott, Malia and Kira are dying due to the virus, and hide in the vault to avoid the assassin. Stiles discovers that an assassin, a teacher overseeing the PSATs, is responsible for unleashing the virus. Agent McCall saves Stiles by shooting the teacher, who was about to kill Stiles. Using the last of his strength, Scott finds the tea leaves and breaks the jar, releasing the spores, which cures the virus. Malia walks away from the others after discovering that she is Peter's daughter.

TIME OF DEATH
For their plan to lure out the Benefactor, Scott is put into a near-death state by Kira, brought in to the hospital, and declared dead, and his friends have 45 minutes before he dies permanently. Derek reveals to Braeden that he lost all of his powers; Braeden teaches him how to use guns and fight without his abilities. Scott experiences repeated hallucinations in which Liam urges him to embrace his werewolf nature, and tries to convince him that he can kill the assassins. In separate hallucinations, Liam fails to convince Scott and is killed by the Mute, and Scott ultimately kills Liam with the Mute's tomahawk. Malia seeks out Peter to get information about her family, especially her biological mother; Peter says that he is trying to locate the "Desert Wolf". Kate and the Berserkers break into the hospital in an attempt to confirm whether Scott is dead, but Chris persuades her to leave; however, Kira's mother becomes injured. Lydia discovers information that suggests her grandmother was a banshee. Lydia discovers that her grandmother wrote down part of the deadpool code and finds another message in the same code.

PERISHABLE
Parrish is attacked and burned alive by his partner, only to survive, which brings him into the supernatural world. Scott, Derek, Lydia and Parrish realize that the deadpool is available to anyone. Lydia explains her grandmother's history; she spent many years researching numerous different subjects in an attempt to learn about her powers. One of her subjects was Meredith, but the tests seriously injured Meredith, forcing her to spend a year in hospital. Stiles and Lydia figure out that the coded message written by Lydia's grandmother was another list of names; they realize that all of the names belonged to deceased patients at Eichen House. Stiles and Lydia go to Eichen House for the files, but are attacked by the head orderly. Scott, Liam and Malia attend the annual lacrosse bonfire, but it turns out to be a trap; the music distorts their senses and makes them sick, allowing the guards, who were working with Parrish's partner, to ambush them. Derek and Braeden rescue them, and Parrish saves Stiles and Lydia from Brunski, and shoots him. Meredith enters the room, still alive, and reveals that she is the Benefactor.

MONSTROUS
Kira saves Brett Talbot and another werewolf named Lori from a team of hunters. Scott races to the Clinic, reunites with Kira and meets Satomi and her pack. Lydia tries to get Meredith to talk, but she will only talk to Peter, who reads her mind to find out how she knows him. Lydia discovers that during her stay in the hospital, Meredith was placed in the same room as Peter, and involuntarily listened to Peter's thoughts and plans. When Meredith heard Lydia's scream when Allison was killed, she decided to carry out Peter's plan; Brunski stole Peter's money from the vault, and she hired assassins to eliminate every supernatural creature in Beacon Hills. The hunters track down Satomi's pack and are fought off. During the fight, Scott further transforms into a new form, but regains control when the hunter he was fighting surrenders. Stiles and Malia discover a room filled with old computer servers behind the wall of the soundproof study at the lake house. They shut down the computers, deactivating the deadpool and terminating the Benefactor's contracts. Peter meets with Kate and continues with his plan to kill Scott and steal his powers.

A PROMISE TO THE DEAD
Dr. Deaton meets with one of the inmates of Eichen House, Dr. Valack, who claims to have knowledge regarding what Kate did to Derek. Deaton obtains the information by looking into Valack's third eye, but ends up in a coma. Chris tracks down Kate in the sewers, but encounters Peter and a Berserker. Peter impales Chris with a metal bar and leaves. As Stiles and Liam prepare for the season's first lacrosse game, Scott and Kira go on a date in Derek's loft, but are ambushed by Kate. Scott and Kira are eventually defeated and abducted. Lydia is able to awaken Deaton; he informs the group that Kate has taken Scott and Kira to Mexico. Peter appears at the lacrosse game, and offers Malia a deal; he will give Malia her mother's identity if she helps him kill Kate. Parrish finds Chris in the sewers and frees Chris. Kate imprisons Scott and Kira in the abandoned church in the Mexican town where she was keeping Derek, and informs Scott that she is planning to turn him into a Berserker.

SMOKE AND MIRRORS
Kira awakens in the tunnels, and Scott, now a Berserker, attacks her. Kate explains that she was drawn to La Iglesia after she turned into a Nagual, and found Berserkers. Lydia and Mason are attacked by a Berserker at the school, and are held prisoner. The pack arrive at La Iglesia, but are attacked by Scott. Derek is badly injured, and Braeden protects him while the rest pursue Scott. Stiles finds Kira, while Peter, Liam and Malia overpower Scott, and Liam manages to to bring him back. In Beacon Hills, Stilinski enters the school and destroys the Berserker using the Mute's mine. In La Iglesia, Kate attacks Braeden, but Chris, Parrish and the Calaveras arrive. Derek apparently dies, but reveals that his body was evolving; he is a werewolf again, and can shift into a full wolf. Kate escapes into the tunnels and reveals she tried to kill Scott because she thought that he killed Allison. Peter reveals his true plan and attacks Scott, who embraces his true nature, and easily defeats Peter. Chris leaves to hunt down Kate. Peter is locked up in the supernatural wing at Eichen House, in the same room as Dr. Valack.

CREATURES OF THE NIGHT
Scott, Stiles, Lydia, Kira and Malia prepare for their senior year. Sheriff Stilinski is threatened by a teenage delinquent named Donovan. Kira comes back to Beacon Hills after spending the summer in New York. Stiles and Malia are continuing their search for Malia's biological mother, the Desert Wolf, while Stiles is struggling with the fear that he will lose his high school friends when they all go to college. A strange, mutated werewolf named Belasko hunts down Scott, intending to steal his Alpha power. Scott and Kira are able to fight off Belasko with the help of another Beta werewolf, who introduces himself as Theo, an old friend of Scott and Stiles. Theo says that he's come back to Beacon Hills to join Scott's pack. Belasko is later executed by his masters, the Dread Doctors. In a flash-forward, Lydia is being held in Eichen House; she's questioned by Dr. Valack, and says that her friends are all going to die.

PARASOMNIA
Deaton informs Scott that Belasko's claws were actually the talons of a harpy eagle, and warns him that someone may be trying to change the rules of their supernatural world. Stiles investigates Theo, as he's convinced that Theo is up to no good. Liam reveals his true nature as a werewolf to his best friend Mason, and tells him about the supernatural world. Lydia and Parrish try to help a girl named Tracy, who has been suffering from hallucinations and night terrors. Tracy later wanders into the lair of the Doctors, who inject her with a serum that turns her into a werewolf.

DREAMCATCHERS
Tracy goes on a killing spree, brutally murdering her father and her psychiatrist. Liam, Mason and Brett discover that Tracy was buried alive in the woods and dug her way out of the ground. Lydia and Kira figure out that Tracy is still trapped in a night terror and thinks that she's still asleep. Scott, Stiles and Malia bring Tracy to Deaton at the vet clinic, where Tracy grows a tail and is revealed to be a Kanima. She paralyzes Scott, Stiles, Deaton and Malia and escapes, breaking through a barrier of mountain ash with ease. Tracy then goes after Lydia's mother at the police station; during the resulting fight, Kira unleashes her Kitsune powers and manages to cut off Tracy's tail, but Lydia is badly injured. Malia arrives and manages to subdue Tracy, but the Doctors immediately appear and kill Tracy in front of Malia.

CONDITION TERMINAL
In a flashback, Parrish tells Lydia about a dream where he carries a body to the Nemeton before setting himself on fire. The Doctors abduct Donovan and transform him into a supernatural creature, who Theo is working with. Lydia undergoes surgery in the hospital, and asks Parrish to teach her how to fight. Deaton informs Scott that Belasko was a werewolf-Garuda hybrid, while Tracy was a werewolf-Kanima hybrid. They were both made artificially, explaining why Tracy was immune to mountain ash: someone is creating hybrid supernatural creatures. While being Mason's wingman at a nightclub, Liam argues with a girl named Hayden, while another Chimera, Lucas, tries to seduce Mason. Scott, Kira, Liam, and Brett manage to subdue Lucas. Kira loses control and attempts to kill Lucas, but Scott stops her. The Doctors appear and kill Lucas themselves, stating that he was a failure. Malia discovers a book in Tracy's bedroom called "The Dread Doctors", featuring pictures of the Doctors on its cover. Parrish takes Lucas's body to the Nemeton in a trance and sets them both ablaze. Elsewhere, Stiles is attacked by Donovan, who has been fully transformed into a Chimera.

A NOVEL APPROACH
Donovan, who is revealed as a wendigo-lamprey hybrid, chases Stiles into the school library, where Stiles accidentally kills him in self-defense. Parrish steals the bodies of Tracy and Donovan, and takes them into the woods in another trance. Scott overhears Kira whispering in Japanese in her sleep. Malia shows the book that she found to the others, and Scott discovers that it is dedicated to Dr. Valack, a three-eyed inmate at Eichen House. Scott, Kira, Stiles, and Lydia go to Eichen House. Stiles and Lydia question Valack, who reveals that he wrote the book under an assumed name to chronicle what happened the last time the Doctors came to Beacon Hills. Kira's electric power goes haywire, knocking out the power to the asylum, and disrupting the electromagnetic currents that are part of its supernatural security system. The Doctors enter the asylum, attack Valack, and surgically remove his third eye. Malia has a flashback while driving with Theo, and discovers that the Desert Wolf caused the car crash that killed her adopted mother and sister. An injured Valack uses a recording of Lydia's banshee scream to shatter the glass wall of his cell.

REQUIRED READING
Sheriff Stilinski discovers eight large holes on the lacrosse field, suggesting that the Dread Doctors have created eight new Chimeras. Parrish begins teaching Lydia how to fight. Liam attempts to make things up to Hayden. The group begins reading Valack's book, but Kira has difficulty reading it. Mason later explains to her that it is because Kitsunes are confused by "language tricks." Theo records Kira's whispering in her sleep, and he later informs Scott that what she has been saying translates to "I am the messenger of death." Scott has an asthma attack at the high school. One of the new Chimeras, a boy named Josh, enters the school basement, and chews through the power lines, before making his way to the hospital roof. Scott, Stiles and Lydia all experience traumatic visions because of their exposure to the book. Liam discovers that Hayden is a Chimera. In the hospital, Scott and Malia are attacked by the Pathologist, one of the Doctors, but they manage to escape. Meanwhile, Stiles goes to the roof of the hospital during a hallucination. Josh, the new Chimera, attacks Stiles, but Theo rescues him and kills Josh.

STRANGE FREQUENCIES
Theo convinces Stiles to help him conceal the truth about Josh's death. Hayden is attacked by the Doctors, but Liam rescues her and takes her home. However, she then transforms into a werewolf. Mason befriends Corey, Lucas's ex-boyfriend, and discovers that Corey is also a Chimera. Kira's mother, Noshiko, warns her that Kira's "inner fox" is fighting her for control. Melissa McCall and Sheriff Stilinski discover that the Chimeras had all previously received organ transplants. Theo and Stiles stake out the vet clinic to find out who is stealing the dead Chimeras. Scott, Lydia, Malia, Liam, and Parrish set up a trap in the high school, planning to protect Hayden and capture one of the Doctors. Kira disappears from her house. Meanwhile, Parrish slips into another trance after seeing a hallucination of Lydia. He goes to the vet clinic, knocks Stiles and Theo unconscious, and steals Josh's body. The Doctors enter the high school, subdue Scott, Lydia and Malia using illusions, and abduct Liam and Hayden. Melissa finds a dead Chimera girl in her house, who has been impaled by Kira's katana.

OUROBOROS
Deaton investigates the Doctors, but is confronted by the Desert Wolf. Kira is arrested for the murder of the Chimera girl, but her father confesses to the crime to protect her. The Doctors begin experimenting on Liam and Hayden. Scott accesses Corey's memories and discovers that the Doctors took him to a water plant. Liam and Hayden meet another Chimera with amputated wings. Zach explains that the Doctors kill their failed Chimeras when they start bleeding mercury. Scott, Malia, and Mason go to the water plant to rescue Liam and Hayden but fail. Theo and Lydia discover that Liam and Hayden are being held in the abandoned house where Belasko first appeared. Kira manages to read Valack's book and discovers that the Doctors experimented on her the night she first came back to Beacon Hills. At the hospital, Parrish goes into another trance and steals the female Chimera's body. Kira decides to leave Beacon Hills with her family until she can understand what the Doctors did to her. Stiles and Lydia find out that Parrish is the person stealing the bodies.

LIES OF OMISSION
Scott struggles with the return of his asthma. Theo asks the Doctors to leave Hayden alive. Hayden begins bleeding mercury, while Corey begins vomiting blood and mercury and is taken to the hospital. Theo tells Scott that Stiles murdered Donovan, leaving out that it was in self-defense. Corey tries to escape the hospital, but he is found and killed by the Surgeon. Lydia and Parrish find the Nemeton, where Parrish has left the dead Chimeras. Parrish is horrified, and tells Lydia that in his dream, there were hundreds of bodies. Theo lies to Sheriff Stilinski, claiming that he killed Donovan in self-defense. Liam and Hayden decide to go on the run, but they are confronted by the Doctors. Scott, Theo, and Liam fight them, while the third Doctor injects Hayden. Parrish locks himself in a cell at the police station. Scott confronts Stiles at the vet clinic, and they fight over Stiles killing Donovan. Hayden's condition begins rapidly worsening. Liam asks Scott to bite Hayden, hoping that it will heal her, but Scott refuses to do so.

STATUS ASTHMATICUS
Scott argues that Hayden is weak and will die if he bites her. The pack enlist Melissa to treat Hayden at the vet clinic, while Lydia discovers that Parrish is a hellhound. Theo locks Malia up at the hospital, and then abducts and injures Sheriff Stilinski. Scott goes to the school, where Theo traps him with mountain ash and reveals that he was the first Chimera, and Scott finds that Theo was poisoning him by putting wolfsbane in his inhaler. Malia escapes, but is attacked by a Chimera. However, Braeden rescues her and warns her of the Desert Wolf. Theo confronts Stiles and reveals his plan to create a pack of villains. Scott and Liam engage in a fight, and Scott's poisoning and his unwillingness to kill Liam render him disadvantaged, but Mason appears and returns Liam to a calm state. Theo kills Scott, however, Melissa is able to revive him. Theo accesses Lydia's memories, and brings her to the Nemeton where he injects Tracy, Corey, Josh, and Hayden to revive them as his own pack. The Doctors uncover a painting depicting a battle between a hellhound and another creature.

THE LAST CHIMERA
Parrish experiences a vision, which prompts him to search for Lydia; he discovers her in the woods in a catatonic state. Stiles confronts Scott, demanding to know what happened to his father. After a brief discussion, Stiles meets with Theo. Stiles and Scott deduce that Stiles' father was attacked by another Chimera, Noah Patrick, who is also being hunted by the Dread Doctors. Lydia's mom signs papers to transfer Lydia to Eichen House. The pack find Noah and are confronted by the Dread Doctors, but Chris Argent helps them escape. Stiles discovers that his dad was poisoned by Noah's bone spikes. This information is relayed to Melissa, who informs the surgeon to remove a piece of Noah's bone spike from Sheriff Stilinski's body, and saves his life. In a flashforward, Lydia experiences a vision where she sees Theo's sister without her heart, and discovers that in the past, the Dread Doctors transplanted the heart to Theo to make him the first Chimera. Theo kidnaps Lydia, but Parrish shows up in his Hellhound form.

DAMNATIO MEMORIAE
Hayden and Liam are attacked by a massive, shadowy creature, which Scott later identifies as the Doctors' last Chimera. Scott and Stiles reconcile and begin investigating the creature, while Theo trains his new Chimera pack. Malia and Braeden discover that the Desert Wolf is on her way to Beacon Hills with Deaton hostage. Lydia has a dream of Meredith, who promises to teach her how to control her banshee powers. Scott and Stiles deduce that the monster is an ancient supernatural creature that was recreated by the Dread Doctors, and decide that they need to reunite their pack. Chris visits Gerard, heals him using a strange plant, and interrogates him about the last Chimera. Gerard reveals that the creature is the Beast of G vaudan. Kira and her mother are in New Mexico, where they are confronted by a trio of Skinwalkers.

CODOMINANCE
Theo and Tracy are confronted by the Doctors and the Beast, after Theo reveals that the Doctors are trying to help the Beast remember its past self and unleash its full power. Meanwhile, the Skinwalkers inform Kira and Noshiko that they intend to test Kira to see if she can learn control; if not, they will turn her into a Skinwalker. Scott and Stiles go in search of Kira, and reconcile along the way; in the process, Scott deduces that Malia intends to kill her mother, the Desert Wolf. At Eichen House, Meredith continues teaching Lydia how to use her banshee powers. Kira's test begins, as the Skinwalkers summon an Oni for her to fight; however, Kira's inner fox takes control of her and destroys the Oni, thereby failing the test. The Skinwalkers attempt to force Kira to stay, but Scott and Stiles arrive in time to rescue her and Noshiko. Kira and Scott get back together as they return home. Liam and Mason tell Scott that they've learned Theo is trying to find a blind Alpha, and Scott realizes that Theo is looking for Deucalion.

THE SWORD AND THE SPIRIT
Chris and Gerard find corpses in the sewers, victims of the Beast. Scott and Liam discover the Doctors' underground lair, where they meet up with Chris and Gerard and discover a painting in the Doctor's lair that depicts a battle between the Beast and a Hellhound. Gerard and Chris help Parrish to discover his true nature. Malia, Braeden and Theo track down the Desert Wolf and find Deaton, but Theo hands Malia over to the Desert Wolf in exchange for Belasko's claws. The Desert Wolf reveals that she wants to kill Malia because she lost some of her power when she gave birth to Malia, and intends to reabsorb that power. The Beast appears and attacks; Malia, Braeden and Deaton escape, and the Desert Wolf gets away. Lydia gains control over her powers and tries to escape Eichen House, but fails. Theo and his pack have captured Deucalion, now blind again; he deduces that Theo wants his help in stealing the Beast's powers, and demands Scott's eyes in exchange. Scott reunites his pack and begins planning to rescue Lydia.

AMPLIFICATION
The Beast goes on a rampage through Beacon Hills; Parrish tries to stop it as a Hellhound, but is defeated. Deaton warns Scott and Stiles that, if Dr. Valack has drilled a hole into Lydia's skull to amplify her powers, it will kill her, as well as triggering a supercharged "death scream" that will kill everyone around her. Scott and his pack develop a plan to get Lydia out of Eichen House. Scott, Stiles and Liam infiltrate Eichen House, while Malia and Kira enter the electrical room and are able to knock out the power. Deucalion informs Hayden that Theo intends to use Belasko's claws to absorb the Beast's power, but the claws will kill him if Theo uses them. Scott and Liam are able to get Stiles into the closed wing, where supernatural creatures cannot enter due to mountain ash. Stiles reaches Lydia, to find that Valack has already performed the operation, and hides when Valack arrives. Theo and his pack break into the asylum, and use Lydia to lure the Hellhound to them. Eichen House goes on lockdown, trapping everyone inside.

LIE ABILITY
Parrish easily overpowers Tracy, Josh and Corey, but Theo disables him by impaling him; meanwhile, Valack escapes with Lydia, and Stiles and Theo pursues them. Scott and Liam find Meredith, who tells Scott that Parrish can find Lydia. Kira's electricity begins to overload, but Josh helps her by absorbing the electricity; in exchange, Malia helps to heal Corey, who was badly burned by Parrish. Valack plans to increase Lydia's power so that she can discover the identity of the Beast, and reveals that he intends to put a Dread Doctor helmet on her; however, Lydia loses control and unleashes a scream that kills Valack. Scott and Liam help Parrish transform back into his Hellhound form. Stiles and Theo rescue Lydia, while Parrish burns through the mountain ash barrier, allowing Scott and Liam to follow him. Lydia begins to unleash a deadly scream, but Parrish smothers the scream and saves the others. Mason and Hayden restore power to Eichen House, and the packs escape. Scott and Stiles rush Lydia to Deaton, who heals her.

A CREDIBLE THREAT
Parrish fights the Beast at the school, but loses, as the Beast is getting smarter. Mason deduces that the Doctors are using high-frequency radio signals to trigger the Beast's shifts, and the pack realize that the Beast may be summoned again at the upcoming lacrosse game. Scott and Stiles find Bobby Finstock in rehab, and convince him to coach the game, planning on having him forfeit the game; however, Finstock refuses to do so and the game begins. Scott convinces Brett and his sister Lori to help them. With help from Chris, Gerard and Lydia, Parrish is able to access his Hellhound side; the Hellhound informs Lydia that it possessed Parrish when he died defusing a bomb. At the game, Kira loses control and injures several players, before storming off. She almost kills Lori, but Scott stops her. Mason and Corey search for the Beast's human form at the game. Meanwhile, Malia disables the broadcast antennas, but she is interrupted by the Desert Wolf, and the news broadcast begins. The Beast immediately appears, and overpowers Liam before going on a rampage through the high school.

MAID OF GEVAUDAN
Parrish leaves, believing himself to be too dangerous. Chris and Gerard tell Lydia the story of Marie-Jeanne Valet, the first werewolf hunter and the woman who killed the first Beast of G vaudan. With help from her allies, including a man named Henri Argent, she hunted down and killed the Beast, which was revealed to be her brother Sebastien. Marie-Jeanne later married Henri and took his surname; they went on to start the Argent family of hunters. Gerard suggests that Lydia might be able to kill the Beast, but she insists that they need Parrish and leaves to find him. Meanwhile, Scott takes on the Beast at the school, while Stiles and Hayden manage to heal Liam. Scott fights the Beast in the school library, after transforming in front of numerous students, and is losing until Stiles, Liam, Malia and Braeden come to help him. The four of them manage to drive the Beast out of the school, and Scott follows its scent to a car where they find a pair of bloody sneakers. Mason shows up and reveals that it's his car, and Scott and Liam realize that Mason is the Beast's human form. Before any of them can do anything, Corey appears and abducts Mason.

THE BEAST OF BEACON HILLS
Mason is abducted by the Dread Doctors. Lydia and Sheriff Stilinski persuade Parrish to remain in Beacon Hills and to fight the Beast. Deucalion reveals that he could have escaped from Theo at any time, and advises Theo on what to do next. Theo kills Josh and absorbs his power, allowing him to wear the Dread Doctor helmet to discern the Beast's identity; however, he doesn't see Mason. Scott, Liam and Theo team up and find Mason at the Doctors' lair, but they are cornered by the Doctors. Malia and Braeden are confronted by the Desert Wolf at Scott's house; the Desert Wolf gets past the mountain ash barrier, but Braeden recreates the barrier and traps the Desert Wolf inside the house with Malia. Kira returns to the desert and requests the Skinwalkers' help. The Doctors easily overpower Scott, Liam and Theo, but Mason then naturally transforms into the Beast. The Beast kills the Doctors, before Parrish, Chris and Gerard arrive and join the fight. The Beast reverts back to human form, but transforms into Sebastien instead of Mason.

APOTHEOSIS
Sebastien searches for the Surgeon's cane-sword, which Gerard reveals was once the spear that Marie-Jeanne used to kill the first Beast. The Surgeon was actually Marcel, Sebastien's old friend; he then dies. Theo kills Tracy and takes her power. Sebastien pays a visit to the Sheriff's station and injures Lydia and Hayden. Deaton thinks a part of Mason is still inside Sebastien, and that Lydia is the answer to saving him. Deucalion double-crosses Theo and reveals that he was working with Scott. Malia uses Belasko's talons to take away what's left of the Desert Wolf's power. Parrish, Chris, Scott and Liam fight Sebastien, but are losing, until Kira returns and brings Lydia to the Beast; Lydia screams Mason's name, separating Mason from the Beast. Parrish pins the Beast down and Scott impales it with the cane-sword. Theo attacks the pack, but Kira opens up the ground and summons Theo's dead sister, who drags him into the hole. Later on, Scott turns Hayden into a werewolf, Stiles decides to become a cop, and Kira leaves with the Skinwalkers to gain control over her fox spirit. The Doctors' final test subject, a Nazi Alpha werewolf, has escaped from their lab.

MEMORY LOST
Scott, Stiles, Lydia, and Malia are preparing for their upcoming graduation. Liam and Hayden find a young boy named Alex, whose parents were abducted by a man riding a horse. Scott, Stiles, Liam and Mason later go to Alex's house and find that his parents appear to have been erased from existence. Stiles sees the man who took Alex's parents, and all of Alex's belongings also vanish. Lydia and Stiles deduce that the men on horseback are Ghost Riders, part of the mythical Wild Hunt. Anyone who sees them is a future target for erasure. Despite being kept in the Sheriff's station, Alex is taken by the Riders and erased. Liam, Mason and Hayden find a dead body in the high school. Scott and Stiles go to the school, and Stiles realizes that he is the next target, as everyone except Lydia has forgotten him, including his father and Scott. Before he is taken by the Riders, he tells Lydia to find a way to remember him. The next day, it is apparent that Lydia has also forgotten Stiles.

SUPERPOSITION
Mason and Corey see the Ghost Riders abducting a student in the school library, and Corey discovers that he can see the Riders when he turns invisible; however, they forget about the abducted student when he is erased, and only remember that they saw the Riders. Scott, Lydia and Malia all begin having hallucinations and subconscious memories linked to Stiles. Scott thinks back to the night he was first bitten, and realizes that his best friend must have been with him. It's revealed that Stiles's mother, Claudia, is somehow alive as a result of Stiles's being erased. Liam, Mason and Corey use Corey's powers to recover the missing student's ID badge, which helps them to remember him. Scott, Lydia, Malia and Deaton deduce that the Wild Hunt doesn't just take people, but also erases them from reality. With Deaton's help, Lydia subconsciously draws Stiles's name by writing the word "mischief" in a pattern, but doesn't remember who he is.

SUNDOWNING
Mr. Douglas, a new teacher at the high school, is revealed to be the Nazi Alpha werewolf who escaped from the Dread Doctors. He kills several people by biting open their skulls and eating their pineal glands, causing Chris Argent to return to town and recruit Melissa for an investigation to find the werewolf responsible for the murders. Meanwhile, Hayden meets a student named Gwen, whose sister was abducted by the Ghost Riders. Assuming that Gwen might be the Riders' next target, Liam, Mason, Corey and Hayden throw a party at Scott's house in an attempt to keep her safe. The Riders show up; Corey uses his power to make one of them visible, allowing Liam to fight off the Rider and save Gwen. Parrish confronts the Rider, which vanishes without attacking him. Elsewhere, Scott, Lydia and Malia track down Sheriff Stilinski's father Elias, who was also nicknamed Stiles. Elias turns out to have dementia and was abusive to his son, but is revealed to remember Stiles. Scott and Liam realize that all the students who saw the Ghost Rider at the party are now targets for the Wild Hunt.

RELICS
Lydia continues investigating Stiles, now looking for some sort of "relic" he might have left behind. She tries to investigate the Stilinski house, but Claudia stops her. Scott, Liam and the others attempt to protect everyone who saw the Ghost Rider at the party by taking them all to Chris's underground bunker; however, four of the kids, including Gwen, are participating in a lacrosse game at the high school. Scott, Liam and Corey participate in the game to protect them, while Chris and Malia guard the bunker and Mason deduces that Parrish may be able to stop the Riders. The Riders show up at the game and manage to abduct and erase numerous people, including Gwen. Parrish confronts one of the Riders and is shot by it, but survives. One of the students at the bunker, Nathan, allows the Riders into the tunnels by attempting to escape, and they erase him and the other students from the party. Lydia and Melissa investigate Claudia's medical records, which show that she had no children, but somehow miraculously survived her frontotemporal dementia. It's revealed that Stiles's "relic" is his Jeep, which is still in the school parking lot.

RADIO SILENCE
After being abducted, Stiles finds himself in an abandoned train station with many others who were also erased by the Ghost Riders. One of those people is Peter Hale, who reveals that he was abducted by the Riders after he escaped Eichen House during the power outage caused when the pack rescued Lydia. Stiles, Peter, and another prisoner attempt to figure out how to escape: the other prisoner attempts to escape through a magical barrier set up by the Riders, but the barrier incinerates him. Stiles and Peter attempt to use the train station's intercom to contact Stiles's friends, but are unsuccessful. Meanwhile, Scott, Lydia, and Malia find Stiles's Jeep in the school parking lot; Lydia deduces that it might belong to Stiles. Peter manages to make it through the barrier, but he is badly burned as a result, surviving only due to his werewolf healing ability. Scott and Malia find Peter, remember who he is, and realize that they had forgotten him too. Stiles uses the intercom again and is able to contact Scott and Lydia through the radio in his Jeep. He tells them to find "Canaan", one of the towns listed on the train station's Arrivals board.

GHOSTED
Lydia has a vision of a town called Canaan in the 1980s, where the residents all disappeared. The gang goes to Canaan and realize that it is a ghost town, as the Riders have taken the entire population. They see a boy who leads them to the house of Lenore, a banshee who is the only remaining resident of Canaan. Lenore takes them prisoner as playmates for the boy, who is the ghost of her dead son Caleb, unconsciously summoned by her to fill the void in her life that was created by the loss of the townspeople. Caleb almost kills Scott and Malia until Lydia is able to convince Lenore to release them. Liam and Hayden devise a plan to fight the Riders. Using Kira's sword, Liam frees Theo from his purgatory.

HEARTLESS
Lydia theorizes that Claudia is a ghost like Caleb, conjured by Sheriff Stilinski to fill the void in his life created by Stiles's erasure. The pack captures a Ghost Rider and tries to interrogate it, but are unsuccessful. Mason deduces that Parrish can communicate with the Riders, but the Rider somehow triggers Parrish, who tries to free it. Scott and Liam must force him away. Malia and Melissa heal Peter's burns in return for his help finding the location of the portal to the Riders' train station. Mr. Douglas reveals his true identity and overpowers Theo, then kills the Ghost Rider and eats its pineal gland. Lydia and Sheriff Stilinski find Stiles's old bedroom behind a wall in the Stilinski house. Mr. Douglas attacks Corey with the Ghost Rider's whip and causes him to vanish like the Riders' other victims.

BLITZKRIEG
Mr. Douglas forces Chris and Melissa to help him find Parrish; he then erases them both and takes control of Parrish. Theo explains that Douglas was a Nazi captain, and that he wants to take control of the Ghost Riders and use them as his own supernatural army. The gang realizes that the rift's entrance is underground. The Riders erase Mason and Hayden, but Liam escapes. Mr. Douglas and a mind-controlled Parrish confront the gang at the rift; Parrish opens the rift, and Douglas and Parrish go through it. The Riders nearly kill Scott and Malia, until Peter intervenes and sacrifices himself to help them escape, being erased again. Sheriff Stilinski recovers his memories of Stiles and realizes that Claudia is dead, which causes her spirit to vanish. Scott, Lydia, Malia, Liam, Theo and Sheriff Stilinski are now the only people left in Beacon Hills; however, they realize they can open another rift by remembering Stiles.

MEMORY FOUND
Lydia, Malia and Scott try to remember Stiles in hopes of reopening the rift. Sheriff Stilinski is erased by the Ghost Riders. Scott and Malia each enter Parrish's freeze chamber and go into a death-like trance in the hope that it will trigger memories of Stiles, which will open a rift. They each recover their memories of Stiles, but the rift does not open. Scott then hypnotizes Lydia, which brings her to the memory of when she first kissed Stiles. This finally opens the rift. Meanwhile, Liam and Theo fight the Ghost Riders to keep them from finding Scott.

RIDERS ON THE STORM
Stiles makes it through the rift with help from Sheriff Stilinski. Lydia, Scott and Malia are disappointed when Stiles does not appear through the breach, but he reappears in his Jeep instead. Liam shows Scott that there are railroad tracks in the buildings all over town. Mr. Douglas and Parrish confront them, but Stiles appears and helps to free Parrish from Douglas's control. Liam manages to find the train station and reunites with Mason and Hayden; they discover that Douglas is using Corey to merge the Ghost Riders' realm with the real world so he can gain control over them. Stiles and Lydia kiss before Claudia's spirit attacks them and the sheriff, but they manage to destroy her. Scott, Malia, Peter and Theo battle Douglas and the Riders in the woods; the pack manage to divert the Riders' ghostly train past Beacon Hills and free Corey, which reverses the merging. The Riders begin to leave, but when Douglas objects to their departure, they claim him as one of their own. Everything in Beacon Hills returns to normal. On their last day of high school, Scott and Stiles discuss their future plans and drive off together in Stiles' Jeep.

SAID THE SPIDER TO THE FLY
Scott and Liam discover many dead wolves in the forest. A new hellhound named Hawlyn escapes from Eichen House, seeking something that Scott's pack let out when they rescued everybody from the Wild Hunt. Lydia has a premonition and convinces Malia, who was on her way to Paris, and Scott, who was preparing to leave for college, to stay in Beacon Hills to help. Tamora Monroe, the new guidance counselor with ulterior motives, kills Hawlyn before the pack can learn about the creature he was hunting. Scott deduces that Hawlyn's killer was a hunter. Stiles begins his career as an FBI intern in Virginia and is shocked to discover the FBI are pursuing Derek Hale, who they believe is a mass murderer.

RAW TALENT
Theo is attacked by a group of unknown hunters. Feeling threatened, Scott loses control of his shift and almost attacks Sheriff Stilinski. A student named Aaron is attacked by a swarm of spiders in the locker room, and Liam and Mason find a faceless body in the same room. Scott and Malia save Argent's life when his latest buyers in his gun business attempt to kill him. Argent deduces that the hellhound's killer is a new hunter. Monroe attacks Brett after figuring out he is a werewolf. Brett flees after Gerard wounds him with an arrow. Gerard recruits Monroe due to her potential as a hunter. Parrish and Lydia go to Eichen House; Parrish is nearly killed by the head doctor, Conrad Fenris, who displays the same fear of the supernatural as Monroe, but Lydia rescues him. The pack deduces that something is making the ordinary people of Beacon Hills afraid of the supernatural.

AFTER IMAGES
Scott, Malia, Liam and Brett's sister Lori try to find Brett, who has been poisoned and is being hunted by Gerard and Monroe. The pack tracks them into the tunnels, where Scott is injured when a hunter's tripwire is triggered. Malia admits her feelings for Scott, while Liam and Lori find Brett and escape the sewers. It is revealed that Gerard had set a trap; Brett and Lori are hit and killed by a truck as soon as they escape, and Liam's rage causes him to shift in front of many eyewitnesses. At the high school, Nolan stabs Corey with a pen and sees his injury heal, outing Corey as a supernatural creature. At the hospital, Melissa attempts to perform an autopsy on the faceless corpse, but is overwhelmed by terror emanating from the corpse. She enlists Argent to help her; they remove a tissue sample from it, but they discover that the corpse has no DNA.

FACE-TO-FACELESS
Aaron goes to the hospital and regurgitates the swarm of spiders onto the faceless corpse, which comes back to life. Rumors about Liam's true nature spread through school. Nolan and the lacrosse team beat him up terribly to try to make him transform through anger, but he is able to resist the change until Coach Finstock intervenes. Liam learns Monroe is the new hunter, and Scott meets with her and Gerard for a peace treaty. Monroe reveals she was almost killed by the Beast of G vaudan, for which she blames Scott's pack. The faceless corpse (the creature that escaped the Wild Hunt) attacks Scott's pack and the hunters, but Parrish repels it. A young werewolf named Quinn is shot by a deputy and later seeks sanctuary with Scott.

PRESSURE TEST
Deaton, Mason and Corey identify the Wild Hunt escapee as the Anuk-Ite or Double-Face, a powerful creature from Native American mythology, which feeds on the fear it creates. Theo escapes the hunters along with Jiang and Tierney, the last survivors of Satomi's pack, but the trio are arrested for murder. Scott's pack go to the police station but Monroe's hunters surround the precinct, demanding they hand over Jiang and Tierney, who killed some of her hunters to avenge Satomi. The Anuk-Ite increases everyone's fear, and two deputies kill themselves. Scott's father arrives and makes a compromise with the hunters, taking Jiang and Tierney into FBI custody, but the deputy who drives them away is loyal to Monroe and kills them. Scott's father persuades Scott's pack to flee Beacon Hills, but they only pretend to do so, having decided to fight back.

TRIGGERS
Aaron identifies a werecoyote named Edgar in school and "tests" him by transferring a spider into his body. Edgar is left slowly dying, and Monroe has him killed by Aaron, unsettling Nolan. Theo and Liam draw the hunters to an abandoned zoo, and Theo stops Liam from killing Nolan in rage, warning him that his fear of the Anuk-Ite triggers his anger. The pack breaks into Gerard's armory, discovering it empty of weapons. They find Jiang and Tierney's remains and a world map, and inadvertently activate the armory's security system, which sucks all the oxygen out of the room. Scott and Malia nearly suffocate to death, but Lydia and Argent rescue them. At the McCall home, Malia and Scott kiss. They discover that Gerard's map indicates the locations of all the Nemetons around the world, which he plans to use to wipe out all supernaturals, and that Gerard has given all his weapons to the people of Beacon Hills. The house is suddenly attacked by gunfire, and one of them is shot.

WEREWOLVES OF LONDON
Gerard sends hunters to London, where Jackson and Ethan, now a couple, live. Suspecting Gerard, they return to Beacon Hills to find Scott, but are captured by Monroe. Melissa, Mason, Rafael and Lydia were all shot in the gunfire attack, moving Scott to decide to form an army to combat Gerard's army. He and Malia unsuccessfully try to recruit Deucalion to join the fight. Malia recruits her father Peter Hale, who joins after he sees that Malia is in love with Scott. The pack discovers that Aaron is the first half of the Anuk-Ite. Lydia sees a vision of the dead Hellhound Hawlyn, who reveals that she needs to find the other half of the Anuk-Ite before it finds itself.

GENOTYPE
Lydia and Malia briefly revive Halwyn, who warns them of the Anuk-Ite's petrifying vision before the silver from Monroe's bullet poisons and finally kills him. While Mason and Theo track Aaron in the tunnels beneath the town, Scott and Liam trace a call on a dead Primal werewolf's phone to science teacher Mrs. Finch, who is revealed to be an Alpha werewolf and Quinn's mother. Quinn, the other half of the Anuk-Ite, attacks Scott, Liam and Finch, while Theo wounds Aaron in a fight, inflicting pain on Quinn in the process. This enables Aaron and Quinn to find each other and merge into the complete Anuk-Ite, who later allies with Gerard to destroy Scott.

BROKEN GLASS
In Brazil, Argent tracks down Derek, who is searching for yellow wolfsbane. Kate, who is allied with Gerard and had framed Derek for mass murder, arrives and shoots them both, taking the wolfsbane to use against Scott. Meanwhile Gerard and Monroe distribute weapons to most of Beacon Hills' population, but Scott believes that the townspeople's fear and hatred is not real and that the war can be averted by destroying the Anuk-Ite. He and Malia enlist Deucalion to teach them how to fight without sight, so they can defeat the Anuk-Ite. Lydia has a vision of her friends petrified and turned to stone.Lydia and Peter track down Scott to warn him, but Monroe and her hunters arrive and open fire, mortally wounding Deucalion. At the same time Nolan betrays the hunters and leads Liam to the hospital to find captured werewolves, but this is a trap Monroe set up, knowing Nolan planned to betray her. Liam, Mason and Corey are trapped in the hospital as hunters close in.

THE WOLVES OF WAR
Stiles and Derek rescue Scott, Lydia, Malia and Peter from the hunters, but Deucalion dies from his wounds. Stiles and Lydia rescue Jackson and Ethan from the hunters, and the pack head to the school to confront the Anuk-Ite, who uses illusions to lure them and petrifies almost all of them. Despite being shot with yellow wolfsbane by Monroe, Scott fights the creature, blinding himself to avoid looking at it. Stiles attacks the Anuk-Ite with mountain ash, inverting its powers and petrifying it, in the process restoring everyone it petrified. Malia helps Scott heal himself by kissing him to help him focus. Liam, Mason and Corey defeat the hunters at the hospital with the help of Melissa, Theo and Nolan. Gerard betrays and fatally shoots Kate with yellow wolfsbane, but after Argent tells them that Scott has won, Kate shifts into werejaguar form and assaults Gerard. Monroe flees Beacon Hills but continues to wage war on supernatural people across the world, along with thousands of her followers. Scott continues to fight against her, and later rescues and recruits a young werewolf named Alec in LA, along with Stiles, Derek, Lydia, Malia, Liam and Argent.

TEEN WOLF: THE MOVIE
A full moon rises in Beacon Hills, and with it a terrifying evil has emerged. The wolves are howling once again, calling for the return of Banshees, Werecoyotes, Hellhounds, Kitsunes, and every other shapeshifter in the night. But only a werewolf like Scott McCall, no longer a teenager yet still an Alpha, can gather both new allies and reunite trusted friends to fight back against what could be the most powerful and deadliest enemy they've ever faced.