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?
| Actor | Role |
|---|---|
 Frank FinlayCommissaris Simon "Piet" van der Valk | Commissaris Simon "Piet" van der Valk |
 Cyd HaymanLucienne Englebert | Lucienne Englebert |
 Françoise ArnoulSolange de Winter | Solange de Winter |
 Oskar HomolkaHoofdcommissaris Samson | Hoofdcommissaris Samson |
 Werner FinckMankiewicz | Mankiewicz |
 Pierre VaneckStam | Stam |
| PPeter RoggischRoyaard | Royaard |
 Françoise PrévostArlette van der Valk | Arlette van der Valk |
 Hans JárayEnglebert | Englebert |
 Günter LamprechtBernard Neefs | Bernard Neefs |
 Hansjörg Felmy(voice) (uncredited) | (voice) (uncredited) |