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

After he makes a mess of his human life, a depressed Harry gets drunk. Liv quits the force when Mike fails to credit her for solving a crime.

Asta saves a badly injured Harry after they fall into a glacial crevasse — and in the process learns a shocking secret.

Brokenhearted when Asta ends their friendship after discovering the real Harry’s fate, the alien decides to fulfill his original mission.

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

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

Harry has an unexpected partner as he tries to infiltrate a military base to find his alien baby. Meanwhile, Asta and Dan help D'arcy to recover and realize, that she's unwilling to leave her new comfort zone.

Harry comes face to face with his greatest enemy 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 gets distracted from his mission, while Mike and Liv make a huge discovery.

Asta and D'Arcy take a drastic step in an attempt to get Harry back on track.

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 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.