Fortitude is a place like nowhere else. Although surrounded by the savage beauty of the Arctic landscape, Fortitude is one of the safest towns on earth. There has never been a violent crime here. Until now. In such a close-knit community a murder touches everyone and the unsettling, mysterious horror of this crime threatens the future of the town itself.
Oslo sends two new officers to attempt to make some sense of the anarchy in Fortitude. Dan Anderssen continues his descent into madness, bringing him face to face with a grief-stricken Michael Lennox.
A survivor of the deadly parasite makes a connection with Michael, but things take a violent turn. Dan continues to lose his grip on reality.
Michael hunts for the place he was held captive, and makes a shocking discovery. Annie Burgess arrives in Fortitude looking for answers.
Michael sacrifices everything for a possible future with Elsa. As his violent deeds catch up with him, Dan realises he will never leave Fortitude.
