Prima visione in Italia su Sky Atlantic.
Prima visione assoluta su BBC One (Regno Unito).
Trama
Il guasto del reattore tiene il Vigil bloccato, mentre Amy inizia a pensare che la sua indagine sia ostacolata volontariamente. A terra intanto, Kirsten si mette in pericolo.
Trama Internazionale
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.
C.S.