A band of renegade musicians decide to perform a musical apocalypse using the city as their orchestra.

A commuter on the last subway of the night is found decapitated. Beck uncovers a gang of young computer freaks who have transformed the entire underground into a hellish, real-life video game where innocent people become targets.

An elderly woman is found murdered. The prime suspect is her husband, a deeply-religious man who collects Russian icons. His grief appears genuine, but his story doesn't check out.

A young girl dies after being hit by a car driven by Beck's trusted deputy Gunvald Larsson. Meanwhile, a taxi explodes at a ferry terminal on the Baltic coast. Beck needs Gunvald's help to crack the case — but he needs to bring him back from the brink.

Camilla's gift to Göran backfires spectacularly.

Hamilton returns to Sweden with a killer on his trail.

Peter and Ulla pressure Ante in the interrogations. Emelie flees from the police, who are executing a search warrant. Just as Peter is about to explain to Stella why they arrested Ante, he accidently discovers something. Peter and the group realize that they missed an important clue contained in the message from Conny-a clue that could lead to the killer.

Detective Peter Wendel is assembling a new cold-case group, but the only people who apply for the job are Jorma and Caijsa, two cops who hate each other. But then an attorney is found murdered, with a note on his body stating that a notorious serial kille

A paparazzi photographer is found dead, his apartment ransacked. When Beck's superior Margareta Oberg goes through the evidence, she reacts strongly to two of the images left behind, going so far as to hide them from the team.

Peter decides to try to speak to the minister of justice about the old murder cases. In Hallstavik, Jorma and Caijsa find the missing pedophile and end up exposing a dark family secret. Later, Peter and Barbro talk to a witness whose testimony takes the i