Wolfgang Kieling
— Commissaris Simon "Piet" van der Valk
Catherine Schell
— Sophie Ray
William Marlowe
— Martin Ray
Pamela Ann Davy
— Elsa de Charmoy
Guy Deghy
— Will Munch
J.A.B. Dubin-Behrmann
— Eric
Lo van Hensbergen
— Magistrate
Guido de Moor
— Piet Ulbricht
Liesbeth Struppert
— Dr Tulp
Piet Römer
— Detective
Onno Molenkamp
— Henk
Erik Plooyer
— Baron
Trudy de Jong
Will Van Selst
— Policeman
Peter Burton
— Herman Ketelboer
André van den Heuvel
— Professor Comerius
Elisabeth Versluys
— Weeping Wife
Geert Thijssens
— Press