Written and created by Tom Edge (The Crown), Vigil is produced by World Productions, the producers behind Line Of Duty and Bodyguard.

Set in Scotland, the series stars Suranne Jones (Gentleman Jack), Rose Leslie (The Good Fight), Shaun Evans (Endeavour), Anjli Mohindra (Bodyguard), Martin Compston (Line Of Duty), Paterson Joseph (Peep Show), Connor Swindells (Sex Education), Adam James (Doctor Foster) and Gary Lewis (His Dark Materials).

The series explores the unseen world of nuclear missiles and the impact having a stock of missile hundreds of feet deep in sea can have on our political climate.

When a Scottish fishing trawler goes missing and a death occurs on board a Trident nuclear submarine, this leads to a tense conflict between the police, Navy and British security, as they each try to deal with the situation in their own way.

DCI Amy Silva (Suranne Jones), is the head of the investigation taking place on both land and at sea and uncovers a conspiracy that threatens to devastate the system at the heart of Britain’s nuclear deterrent.        

Suranne Jones praised writer Tom Edge for creating a thrilling drama, about a secretive world few people get access to. She said: “Amy Silva is a brilliantly complex character, thrown into a highly charged situation where her authority is weakened.

“We watch as she navigates her own personal trauma and loss, all at a time when she’s questioning her relationships and life choices," she added. "It feels fresh and relevant and I can’t wait to start filming.”

Rose Leslie remembered being brought up on BBC dramas and was glad to be working at a place that “feels like home”, describing working with Suranne as a “real honour”.

Tom Edge commented: “I can’t wait to take a BBC One audience down with us, into the pitch-black icy waters of the unseen Atlantic, where tomorrow’s geopolitical struggles are already being played out.”