The new drama series, which has been airing on Sunday nights on BBC One, looks set to return for a second series following its ratings success last weekend.
Series synopsis: 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.
A source told The Sun: “The Beeb knew they had a hit on their hands. So they’ve been in discussion for some time with its creators, World Productions, about a potential follow-up...
"Now those plans are likely to progress at speed, with a view to Vigil II being commissioned. It remains to be seen whether Suranne will return, as Vigil’s makers aren’t afraid to kill off a central character."
The series stars the likes of Suranne Jones, Rose Leslie, Shaun Evans and Martin Compston. The six-part thriller is also made by the same makers of hit series Line Of Duty.
The BBC declined to comment when approached. Vigil continues Sundays at 9pm on BBC One, catch-up on the series so far on BBC iPlayer.