Peter Zadek
Director
Nicolas Freeling
Novel
Peter Schirmann
Music
Walter Lassally
Cinematography
Robert Muller
Writer
Peter Zadek
Writer
Gunther Kortwich
Sound
Wim Lindner
Production Supervisor
Cedric Vonk
Production Manager
Erich Wonder
Production Design
Max Benedict
Editor
Frank Finlay
Commissaris Simon "Piet" van der Valk
Cyd Hayman
Lucienne Englebert
Françoise Arnoul
Solange de Winter
Oskar Homolka
Hoofdcommissaris Samson
Werner Finck
Mankiewicz
Pierre Vaneck
Stam
Peter Roggisch
Royaard
Françoise Prévost
Arlette van der Valk
Hans Járay
Englebert
Günter Lamprecht
Bernard Neefs
Hansjörg Felmy
(voice) (uncredited)
