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.

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

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