Emelie escapes from the police who search Stella and Ante's house, whereupon Peter discovers something by chance. Peter and the group now realize that they missed an important clue…

Interrogations with the regional police chief Ludvig Larsson are underway. The Cold Fall group realizes that Conny had several secrets and it turns out that the extortion activities were more large-scale than previously thought.

Ulla and Veronica pressure Barbro to tell what the cold case group is doing. At the same time, Peter and the cold fall group realize that Ludde is much more dangerous than they first thought.

Peter and Barbro shadow Ludvig Larsson and discover something shocking. At the same time, Caijsa and Jorma try to find out why Conny had the old murder investigations.

A colleague and friend of Peter Wendel has been found murdered. Old unsolved murder investigations are found in the man's apartment. Peter and his group are now tasked with finding out why he had these.