From World Productions, the producers of Line Of Duty, The Pembrokeshire Murders, Save Me, and Bodyguard When a crew member is found dead on board the Trident nuclear submarine HMS Vigil ...

When a sailor is found dead on submarine HMS Vigil, DCI Silva uncovers a conspiracy.

And, you know, that not-so-small detail of the Russians making good on their plans to force HMS Vigil to the surface and render her a sitting duck. Essentially, it seems as if the end is nigh for ...

When a crew member is found dead aboard the Trident nuclear submarine HMS Vigil, the Scottish Police are called on to investigate. However, the UK's nuclear deterrent must remain unbroken ...