Vigil

BBC Three HD

2:45 AM to 3:45 AM

Wednesday 19 August

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The submarine is left exposed by a reactor shutdown, and the crew races to repair the fault. Kirsten uncovers a feud on board the Vigil, 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