An alien hiding in a small Colorado town meets the locals when they ask him to help solve a murder.

In his first week at the clinic, Harry struggles to diagnose a strange feeling: human emotion.

Harry races to keep his secret safe as Asta is forced to face her own past.

Harry travels to the Ute Reservation to help Asta's grandmother and learns what it means to belong.

A surprise visitor introduces Harry to a stressful human institution: marriage.

Harry copes with jealousy when the mayor hires an annoyingly perfect new town doctor.

Fearing he's facing failure, Harry enlists an unlikely ally to help find his ship.

Harry must rely on Asta and D'Arcy for survival. Asta discovers Harry’s secret.

Harry and Asta attend an alien convention.

On the verge of completing his mission, Harry faces his own humanity.

Harry, the alien, is back on earth but doesn't remember who he is and only Asta can keep him safe.

Harry has a plan to save Asta and himself but first he must attend the Sheriff's poker game.

Harry meets a woman unlike any other and realizes that she is the key to his new mission.

Is Harry building another bomb? Asta is going to find out as they go camping on the reservation.

Harry and Asta's trip is interrupted by an uninvited relative as the town celebrates family.

Harry and Asta travel to New York looking for one of his people, but things go horribly wrong.

Harry and Asta find what they are looking for but not what they need as danger closes in.

It's a surprise party as everyone gathers to celebrate Harry, but some dangerous guests cause havoc.

Asta is overwhelmed with guilt after she, Harry, and D'arcy get rid of the dead body.

Asta helps Harry learn how to deal with his newfound fear of death.

Asta tells Dan about the shooting while Harry learns what it takes to be a good friend.

Ben struggles to get the townspeople to accept the resort, while Harry and Asta find out the origins of Goliath.

After losing the Alien Baby, Harry learns which alien race is on Earth. It's not what he expected.

Harry goes head-to-head with one of his biggest enemies, the Greys.

Harry has an unexpected partner as he tries to infiltrate a military base to find his alien baby.

Harry comes face to face with his greatest enemy, the Greys, and makes a choice that may affect Earth forever.

In an attempt to gather information on the Grey aliens, Harry puts Asta in harm's way.

D'arcy inserts herself into Harry's mission, while Kate grows more uncomfortable in her own home.

Harry accompanies the Hawthornes to Yellowstone to find out what the Greys are up to.

Harry tries to bond with Heather, aka the Avian alien.

Harry and Heather draw closer and plan to leave Earth together, leaving the planet at the Greys' mercy.

Harry hits rock bottom, Kate begins seeing the truth, and Mike helps Liv face her greatest fear.

Harry and Asta get surprise visits. Ben grows suspicious of Mike and Liv's private investigation.

Harry and Asta team up with an unlikely ally to try to save the Earth.

Harry must escape an outer space prison to stop a dangerous threat in town.

Harry and Asta work together to try and get something Harry desperately needs.

Harry and D'arcy travel to an unexpected place to recover an alien device left behind by his people.

Harry and Heather reunite, but their relationship is more complicated than ever.

Harry struggles to find balance with his new human form as he struggles to bond with his son; D'arcy wants to adopt a dog, while Sheriff Mike and Liv get invited to dinner by Ben and Kate.

Harry is brought in front of The Galactic Housing Council to answer for his crimes.

Harry has to prove himself to someone from his past, his father.

Harry enlists an unlikely ally to help him save Patience.

With lives hanging in the balance, Harry is put to the test.

Harry faces one final threat, and one that forces him to use more than just his alien strength.