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Фрэнк Финлей as Commissaris Simon "Piet" van der Valk |
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Cyd Hayman as Lucienne Englebert |
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Франсуаза Арнуль as Solange de Winter |
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Oskar Homolka as Hoofdcommissaris Samson |
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Werner Finck as Mankiewicz |
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Pierre Vaneck as Stam |
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Peter Roggisch as Royaard |
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Françoise Prévost as Arlette van der Valk |
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Hans Járay as Englebert |
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Günter Lamprecht as Bernard Neefs |
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Hansjörg Felmy as (voice) (uncredited) |
| Directing | Peter Zadek | Director |
| Writing | Nicolas Freeling | Novel |
| Writing | Robert Muller | Writer |
| Writing | Peter Zadek | Writer |
| Sound | Gunther Kortwich | Sound |
| Production | Wim Lindner | Production Supervisor |
| Production | Cedric Vonk | Production Manager |
| Art | Erich Wonder | Production Design |
| Editing | Max Benedict | Editor |
| Camera | Walter Lassally | Director of Photography |
| Sound | Peter Schirmann | Original Music Composer |
