Carl-Gustaf Lindstedt as Martin Beck

Sven Wollter as Lennart Kollberg

Thomas Hellberg as Gunvald Larsson

Håkan Serner as Einar Rönn

Ingvar Hirdwall as Åke Eriksson

Birgitta Valberg as Widow Nyman

Carl-Axel Heiknert as Hult

Torgny Anderberg as Malm

Bellan Roos as Mamma Eriksson

Gus Dahlström as Pappa Eriksson

Folke Hjort as Melander

Eva Remaeus as Mrs. Kollberg

Gunnel Wadner as Martin Beck's Wife

Harald Hamrell as Stefan Nyman

Bo Widerberg as Man in Red Shirt (uncredited)

Johan Widerberg as Kollberg's Son (uncredited)

Nina Widerberg as Martin Beck's Daughter (uncredited)

Karin Bergstrand as Old Lady Drinking Coffee (uncredited)

Torbjörn Tännsjö as Angry Man at Police Station (uncredited)

Michaela Jolin as Screaming Woman on the Bus (uncredited)

Bo Holmström as TV Journalist (uncredited)

Jan Sandquist as Reporter at Odenplan (uncredited)

Lars Säfström as Reporter at Odenplan (uncredited)

Dan Lindhe as Mustached Policeman (uncredited)

Johan Thorén as Policeman Shot Under Helicopter (uncredited)