After losing the alien baby, Harry learns which alien race is on Earth and it’s not what he expected.

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

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

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.