Keve Hjelm as Martin Beck

Hans Ernback as Folke Bengtsson

Tor Isedal as Gunnar Ahlberg

Gio Petré as Roseanna McGraw

Kerstin Tidelius as Sonja Hansson

Diane Varsi as Mary Jane

Mona Malm as Siv Lundberg

Hans Bendrik as Kollberg, kriminalare

Michael Tolan as Elmer B. Kafka

Leif Liljeroth as Stenström

Tommy Nilson as Projectionist

Monica Strömmerstedt as

Ann-Marie Adamsson as Martin Beck's Wife

Margareta Sjödin as Waitress

Elsa Hofgren as Mrs. Bellamy

Hussein Bahgat as Günes Fratt

Ann Mari Ström as American Passenger

Astrid Rooth as Cleaner

Christina Unell as Ship Hostess

Sten Ardenstam as Night Porter

Carl-Olof Alm as Drunk

Karl Berglund as Doctor

Lars Ruuth as Journalist

Britta Richter as Journalist