Wisting plot
The family Christmas is ruined when William Wisting faces the most challenging case of his career. A shocking discovery has terrified the locals of the small Norwegian town of Larvik: a wanted American serial killer turns out to be living among them. Meanwhile, Line's journalistic investigation into the death of her anonymous neighbor, Viggo, puts her on the straight and narrow of the serial killer. To make matters worse, Wisting is suspended on suspicion of embezzlement of evidence in a previous infamous murder case, leading to a wrongful conviction.