Vigil's reactor shutdown leaves the submarine exposed and the crew racing to repair the fault. Kirsten uncovers a feud among the Vigil crewmates, leading Amy to question whether her investigation has been deliberately obstructed. A hard-won breakthrough leads Amy to believe she finally has the killer in her sights, only for surprising new evidence to cast doubt on her theory. On land, Kirsten's investigation leads to tragedy.

Starring:

Genre:

Drama, Thriller