A human torso is found in the nets of a fishing boat in a small port and the chief of police heads an investigation while waiting for reinforcements.
When Jonas Malakauskas is detained for the night, the photos of the human torso appear on social networks.
Arrested for stealing a corpse, Hjörtur Stefánsson still denies blame for the fire at the factory before providing his version of the facts to Andri.
As the investigation continues, the evidence shows that the victim spent his last night in the town and that he was not a passenger on the ferry.
A recluse in a wheelchair who observes the townspeople through his telescope claims to have seen Hrafn and the murder victim arguing.
Andri is now investigating a new murder. When all clues point to Sigurdur, the detectives from Reykjavik finally arrive.
Pressed to seal the deal, Trausti gets forced confessions from Sigurdur despite Andri’s doubts. Their confrontation awakens ghosts from the past.
Captain Carlsen agrees to work with the police. Ignoring his boss’s orders, Andri keeps investigating and makes a major discovery.
Thanks to strange revelations from his father-in-law, the expert assigned to the factory fire, Andri slowly puts together the pieces of the puzzle.
Leifur continues to reveal valuable information. Andri discovers an unexpected link between Geirmundur and his murderer and faces a dilemma.
An attack on the minister of industries by her twin brother, a sheep farmer, leads Andri up north, where a power plant expansion has divided a town.
A clue at the scene of the second death casts suspicion on two young brothers with ties to an extreme right-wing nationalist group.
When Torfi brags to Andri that Hammer of Thor is about to do something big, the police scramble to prevent a possible act of terrorism.
A reporter's tip and a security video lead Andri to Hammer of Thor's leader. Hinrika tries to get critically ill Skúli to reveal the mayor's location.
Andri learns some suspicious things about murder victim Finnur. Víkingur makes a drunken scene at his father's wake, then at the power plant.
Andri and Hinrika discover the break-in at Finnur's home. On the phone she found, Thorhildur agrees to a meetup. Tensions between Ebo and Pawel explode.
In the wake of another murder, all evidence points to one man. Elín tries to talk to Halla about their past. A secret is found in Hinrika's desk drawer.
A man at Finnur's burial catches Andri's eye. Test results come back on the dead geese. Thorhildur surrenders the phone she'd been hiding to the police.
Ketill discovers incriminating evidence. A text message Thorhildur remembers receiving gives Andri a lead. The killer's identity comes into focus.
The killer's motive becomes clear as people close to Halla and her past reveal long-kept secrets. The police race against time to find Thorhildur.