Maximillian Rapp has confessed to the murders and is sentenced to life imprisonment in prison. However, homicide detective Tara Schöll has doubts about the guilt of the serial killer.

When Maximilian Rapp goes into hiding and the body of customs officer Sass is found, Tara is held responsible. She is promptly suspended, but this does not prevent her from continuing to search for the girls' real killer.

Tara and Henry investigate the case of the Schächter brothers who were murdered in a forest hut. When they and Rapp return to the crime scene, Henry is attacked by a stranger.

Tara and Henry tackle the obscure death of Mr Willcke, who was murdered in a crematorium. Tara insists on having Rapp participate the investigation, who decides to spend the night at the crime scene to look for clues.

Tara Schöll and Henry Kloss reopen the harrowing case of Helena Husek, who was tied to the bed in a bungalow by the lake and found dead. All the evidence pointed to her lover Christian Bohn.

Maximilian Rapp finds an urgent warning for investigator Tara Schöll. Since her father Robert's supposed suicide, Tara has been plagued by feelings of guilt.