Dutch police inspector Piet Van der Valk finds himself repeatedly crossing paths wiht the beautiful yet troubled Lucienne Englebert, the daughter of a famous conductor recently killed in a car accident. Whern the maverick inspector investigates the seemingly senseless killing of a man in Amsertdam, will Lucienne turn up again?
Frank Finlay
as Commissaris Simon "Piet" van der Valk
Cyd Hayman
as Lucienne Englebert
Françoise Arnoul
as Solange de Winter
Oskar Homolka
as Hoofdcommissaris Samson
Werner Finck
as Mankiewicz
Pierre Vaneck
as Stam
Peter Roggisch
as Royaard
Françoise Prévost
as Arlette van der Valk
Hans Járay
as Englebert
Günter Lamprecht
as Bernard Neefs
Hansjörg Felmy
as (voice) (uncredited)
