Gösta Ekman

as Martin Beck

Kjell Bergqvist

as Lennart Kollberg

Rolf Lassgård

as Gunvald Larsson

Niklas Hjulström

as Benny Skacke

Lena Nilsson

as Åsa Thorell

Ingvar Andersson

as Per Månsson

Bernt Ström

as Einar Rönn

Torgny Anderberg

as Evald Hammar

Jacob Nordenson

as Folke Bengtsson

Anita Ekström

as Inga Beck

Tova Magnusson

as Putte Beck

Agneta Ekmanner

as Greta Hjelm

P.G. Hylén

as Kristiansson

Barbro Hiort af Ornäs

as Colonel's wife

Wallis Grahn

as Göta Isaksson

Inga Sarri

as Karin Larsson's mother

Tove Edfeldt

as Girl with a fishing rod

Victor Ginner

as Erik Beck

Anna Helena Bergendal

as Roseanna

Donald Högberg

as Karl Åke Eriksson

Birger Österberg

as Kvant

Tom Younger

as Inspector Kafka

Hans Ullberg

as The colonel

Chris Torch

as Mylvaney

Ivan Mathias Petersson

as Man in a wheelchair (uncredited)

Maj Sjöwall

as Police Secretary in Motala (uncredited)