Resident Alien, Bye Bye Birdie

In the season three premiere, Asta is put in harm's way when Harry attempts to gather information on Grey Aliens.

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

Harry accompanies the Hawthornes to Yellowstone, hoping the mayor will lead him to answers.

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; Mike helps Liv face her greatest fear.

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

The thrilling season three finale. Harry and Asta team up with an unlikely ally to try to save the Earth.