Responding to an anonymous threat, the Stockholm bomb squad detonates a suspicious suitcase. Inside the tattered remains, they discover the body of an infant. Beck leads the investigation to hunt down the man responsible for the grizzly set-up, a man the newspapers call The Monster.

The double-life of a homosexual police officer leads to a showdown between Beck and his arch-enemy Gavling, a.k.a. The Money Man - a notorious kingpin in the underworld of Stockholm.

A serial killer is on the loose. All the victims are women, and all attended the same school. Beck digs deep into a past no one wants to re-live, in an effort to prevent the ultimate act of revenge.

A truck driver is killed in a sting operation - and the dead man turns out to be Beck's long-lost son. Beck's world crumbles, and he loses focus. When he returns to the investigation, it's with renewed passion — this time it's personal.

Martin Beck gets a phone call from a German colleague visiting Stockholm for an art auction. He's found a dead woman in his hotel, and needs Martin's help. The murder investigation brings Beck's team into the world of art fraud.

Martin Beck is drawn out of retirement to help catch a suspected terrorist.

Two patrolling police officers are killed after stumbling onto criminals who have just stolen large amounts of explosives. Detective Martin Beck and his team must locate the suspects before it's too late.

Martin's loyalty is put to the test when Gunvald goes off the grid on a personal vendetta.

Martin investigates a gangland shooting and Gunvald gets too close to the victim's widow.

A murder suspect's attorney has direct family ties to someone on Beck's investigative team.