Wisting and the FBI suspect serial killer Godwin could be linked to twelve other missing person cases in Norway. Convicted killer Vidar Haglund is released from prison after 17 years and comes to confront Wisting.
Line's obsession with the Viggo case leads to a fight with her father Wisting. With the press hot on their heels, Wisting and the FBI discovers more corpses, as pressure mounts to catch the serial killer.
Wisting fights for his career and reputation, by conducting his own secret investigation into the Cecilia case. Torunn suspects Linnea is responsible for her own disappearance, but her parents are convinced she is in danger.
Suspended detective Wisting resorts to desperate measures to prove his innocence, while Internal Affairs puts his police department under intense scrutiny. Benjamin searches for suspects in Linnea's disappearance.
Wisting and former colleague Robekk join forces, but will they figure out who was behind the evidence tampering? When Line uncovers a mysterious videotape connected to her father's case, clues point to Linnea's abduction.