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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 (Suranne Jones) and DS Kirsten Longacre (Rose Leslie) 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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Episode 1
In the third series of Vigil, Amy & Kirsten travel to the icy north, where the great world powers compete to ensure benefits while the ice melts