Annie continues her determined investigation into the killer's identity, and reaches a breakthrough when she discovers the weapons that were used in the murders. Seeking help from Quigley, she is finally able to track down the culprit, and the two detectives put their lives on the line to put a stop to the slaughter. However, their relentless pursuit of justice leads them into a dangerous confrontation, as they stalk the armed murderer through the dark corridors of the area's hydro-electric dam.Watch Now:AmazoniTunes
Smilie holds a press conference to appeal for information about Jonjo, as well as reassuring the public and preventing news of the human heart found by the lake from spreading further. However, his plans are disrupted by Blake, who reveals everything and shares his fears that the community is haunted by a serial killer. An unexpected discovery is made outside a town meeting.Watch Now:AmazoniTunes
A human heart is discovered on the shores of the Loch, and forensic psychologist Blake Albrighton is brought in to join the investigating team. He quickly forms a disturbing theory about the motive behind the seemingly inexplicable murders, but Chief Inspector Frank Smilie is quick to dismiss his ideas. However, if the new arrival is correct, the once peaceful Highland community could be set to endure far more deaths, as a serial killer prowls the area.Watch Now:AmazoniTunes
The search for a serial killer in the area around Loch Ness becomes a matter of life and death for local detective Annie Redford, who is trying to cope with her first murder case. When the body of a local man is found at the foot of Carn Mhor Mountain and an isolated human heart on the loch shore, the town's normality is shattered and the nightmare begins.Watch Now:AmazoniTunes
Sam, Leo and Harry travel back to Sam's old home in Northern Ireland when two bodies are discovered there. As events unfold, Sam realises her father may have been involved and sets out to discover the truth.
Frank takes the law into his own hands in a bid to clear Liam's name, while Morton realises Henry may have vital information about Pettigrew's death. A polar bear carcass arrives at the research centre's lab and as Vincent and Natalie analyse the corpse, they develop a theory about the recent events in Fortitude, which they feel compelled to share with Hildur and DanWatch Now:Amazon
The director of a school arrives home and hears a shot. He finds his wife dead - it looks like suicide, but Sam thinks it is murder and so does the mother of the victim. Sam is also asked to investigate the death of a nun fifty years ago to see if there is proof a miracle has happened so the nun can be made a saint.