Brad Harris
— Donald Ramsey
Olga Schoberová
— Susan Bexter
Dietmar Schönherr
— Dr. Cecil Wilkens
Dominique Boschero
— Mary Lou
Paul Dahlke
— Reginald Sheridan
Horst Frank
— Leutnant Legget
Klaus Kinski
— Speranzo
Pierre Richard
— Inspektor Travers
Corrado Annicelli
— Professor Bexter
Siegfried Grönig
— Gillespie
Maria Vincent
— Kitty
Jacques Bézard
— Monk, the Barman
Siegfried Grönig
— Constable Gillespie
Lubomír Kostelka
— Simpson
Vladimír Hrubý
— Agent
Jindřich Narenta
— Slim
Jan Pohan
— Silm's Partner
Miloš Vavruška
— Brooks
Karel Effa
— Blinky