In the forests north of Copenhagen burnt bodies were found four women. Detective Katrine Ries Jensen, an ambitious and tenacious woman with a forensic psychiatrist Thomas Schaeffer, a lonely man and very intelligent, dangerously involved in the case are on the trail of a serial killer. Killer acting according to a plan which at first glance appears to be impossible to guess where Thomas and for Katerine and it becomes the great challenge. Both are trying to find the human side of the monster. However, the two will not be able to confront the killer until they understand his fantasies and traumas.