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

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

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

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.

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

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

Harry has to prove himself to someone from his past.

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