Episode one will premiere on BBC One and BBC iPlayer at 9pm on Sunday 29 August, with episode two at 9pm on the Bank Holiday Monday, 30 August. Vigil will then continue each Sunday night, with new episodes premiering weekly on BBC One and BBC iPlayer.
The six-part drama from World Productions stars Suranne Jones, Rose Leslie, Shaun Evans, Martin Compston and Paterson Joseph.
When a crew member is found dead on board the Trident nuclear submarine HMS Vigil, police in Scotland are called in to investigate. The catch? The UK’s nuclear deterrent must remain unbroken, so the submarine stays on patrol and Detective Chief Inspector Amy Silva (Suranne Jones) must go aboard to begin an investigation. Although the death was written off as an accidental overdose, Amy suspects foul play. But when the crew close ranks in the face of Amy’s questioning, a new threat overshadows her inquiry.