Cast
Oskar Homolka
Hoofdcommissaris Samson
Pierre Vaneck
Stam
Hans Járay
Englebert
Günter Lamprecht
Bernard Neefs
Werner Finck
Mankiewicz
Françoise Prévost
Arlette van der Valk
Hansjörg Felmy
(voice) (uncredited)
Frank Finlay
Commissaris Simon "Piet" van der Valk
Cyd Hayman
Lucienne Englebert
Françoise Arnoul
Solange de Winter