The drama follows two police officers who are sent to Fortitude, a fictional settlement in Arctic Norway, to help its citizens fight off dark and supernatural forces.

Richard Dormer returns as Sheriff Dan Anderson, who still suffers the effects of parasitic wasps from series one.

Anderson (Dormer) struggles to retain his emotional personality and his grip on reality.

Following on from series two, citizens of Fortitude rally around to protect both the town and Anderson from an outside investigation into the lynching of governor Erling Munk.

Michael Lennox (Dennis Quaid), Natalie Yelburton (Sienna Guillory) and Vincent Rattrey (Luke Treadaway) will also return in the new series

All four parts of the mini-series will be available on Sky On Demand following the release of the first episode.

“It goes to some really dark, twisted places – which is just where it wants to go, I can’t help that,” creator Simon Donald told RadioTimes.com.  

“This season’s been really character-driven, character based, and it ended up really examining the consequences of everything we’ve don’t so far to these poor people in this town.”

Fortitude’s third series will air on Sky Atlantic on the 6th of December and concludes on the 27th, two days after Christmas.