
A young American girl is found dead in Gota Kanal, Swedens largest channel. Since there are hardly any clues or evidence at all it seems as if the murder cant be solved. Martin Beck and his men are assigned to the case. Soon they find a likely suspect and together with a police woman they begin a cat and mouse game to catch him. Plot by Mattias Pettersson.
Martin Beck

Lennart Kollberg

Gunvald Larsson

Benny Skacke

Åsa Thorell

Per Månsson

Einar Rönn
Evald Hammar

Folke Bengtsson

Inga Beck

Putte Beck

Greta Hjelm

Kristiansson

Colonel's wife

Göta Isaksson

Karin Larsson's mother
Girl with a fishing rod

Erik Beck
Roseanna
Karl Åke Eriksson

Kvant
Inspector Kafka
The colonel
Mylvaney
Man in a wheelchair (uncredited)

Police Secretary in Motala (uncredited)
