The police authority is under heavy media pressure after a fatal shooting of a 14-year-old boy. A demonstration against the violence degenerates and the police have to take further blame. Some time later, a massacre takes place on a bus outside the Police Academy. A discovery made by Martin's grandson Vilhelm who goes to school will be an important piece of the puzzle to lead the Beck group further in the investigation.

Alex Beijer will participate in TV's morning program, but it all develops into a nightmare when an unlikely hostage drama arises in the TV studio. Alex can use all his experiences from the years in the Middle East at the same time as the rest of the group needs support to find a solution to the situation.

A murder in a wooded area and a man who died suddenly in a heart attack after being awakened in the middle of the night by a masked burglar. Can the events have any connection? The Beck group is facing another tough case where internal tensions and loyalties are being put to the test.

A body, belonging to a 39-year-old Danish citizen, has been found floating in the water near Liljeholmen. The person seems to have been a member of a notorious Danish drug gang where the league leader is in a Swedish prison, and the only one he agrees to talk to is Steinar.