
7.2
The mysterious disappearance of a Scottish fishing trawler and a death on-board the submarine HMS Vigil bring the police into conflict with the Navy and British security services. DCI Amy Silva and DS Kirsten Longacre lead an investigation on land and at sea into a conspiracy that goes to the very heart of Britain’s national security.
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1Episode 1Episode 1
58 min
When a crew member is found dead aboard the Trident nuclear submarine HMS Vigil, Detective Amy Silva is flown out to investigate.
2Episode 2Episode 2
58 min
With Vigil in danger, Amy must fight to continue her investigation. Meanwhile, Kirsten’s enquiries lead to tragedy.
3Episode 3Episode 3
58 min
Kirsten’s investigation takes her into the heart of Scottish politics, but when she unearths a navy cover-up, it leaves Amy questioning who she can trust on Vigil.
4Episode 4Episode 4
58 min
Kirsten closes in on the killer, but their capture reveals the grave threat that Vigil faces. On the submarine, Amy makes a terrifying discovery.
5Episode 5Episode 5
58 min
Vigil is forced into lockdown as disaster strikes. With communication lost, Kirsten desperately hunts for clues to the source of the threat to Vigil.
6Episode 6Episode 6
58 min
Amy is trapped and running out of time, but will assistance arrive too late? On land, Kirsten chases down the traitor’s accomplice. When the traitor on Vigil puts their plans into action, the crew are forced to fight for their lives.

Suranne Jones
DCI Amy Silva

Rose Leslie
DS Kirsten Longacre

Romola Garai
Eliza Russell

Gary Lewis
DSU Colin Robertson

Chris Jenks
Callum Barker

Jonathan Ajayi
Wes Harper

Amir El-Masry
Daniel Ramsay

Oscar Salem
Captain Sattam Abdul Kader

Dougray Scott
Marcus Grainger
6.1