Vigil is an adrenaline-fuelled thriller that unravels high-stakes conspiracies threatening the very heart of Britain's defences.

Series 1
Two seemingly disparate events - the disappearance of a Scottish fishing trawler and a death aboard a Trident nuclear submarine - bring the police into direct conflict with the Navy and British security services. DCI Amy Silva is thrown into this highly charged situation, tasked with heading an investigation both on land and at sea. Finding her authority increasingly weakened by the forces at play around her, the brilliant but fragile Silva is also left questioning her own choices as she navigates personal trauma and loss. This timely thriller takes viewers deep into the pitch-black icy waters of the Atlantic, to a place where tomorrow's geopolitical struggles are already being played out.

Series 2
DCI Amy Silva and DS Kirsten Longacre return looking into a dark conspiracy in the world of the British Air Force in a brand new investigation. Following a string of suspicious fatalities the pair must enter the secret world of drone warfare to catch a killer.