Vigil is a new adrenaline-fuelled thriller that unravels a high-stakes conspiracy threatening the heart of Britain’s nuclear deterrent. When two seemingly unrelated events – the disappearance of a fishing trawler and a death aboard a nuclear submarine - bring the police into direct conflict with the Navy and British security services, DCI Amy Silva (Suranne Jones) is tasked with heading an investigation both on land and at sea. Taking viewers deep into the pitch-black waters of the Atlantic, this timely thriller reveals a shadowy world where tomorrow’s geopolitical struggles are already being played out.