Directed by
| Gerry O'Hara | ||
Writing Credits (in alphabetical order)
| Nicolas Freeling | ... | (novel) |
| Gerry O'Hara | ... | (adaptation) |
| Edmund Ward | ||
Cast (in credits order)
| Wolfgang Kieling | ... | Van Der Valk | |
| William Marlowe | ... | Martin Ray | |
| Catherine Schell | ... | Sophie Ray | |
 |
Pamela Ann Davy | ... | Elsa de Charmoy |
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J.A.B. Dubin-Behrmann | ... | Eric |
| Guy Deghy | ... | Will Munch | |
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Lo van Hensbergen | ... | Magistrate |
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Guido de Moor | ... | Piet Ulbricht |
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Liesbeth Struppert | ... | Dr. Tulp |
| Piet Römer | ... | Detective | |
| Onno Molenkamp | ... | Henk | |
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Erik Plooyer | ... | Baron |
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Trudy de Jong | ||
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Will Van Selst | ... | Policeman |
| Peter Burton | ... | Herman Ketelboer | |
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André van den Heuvel | ... | Professor Comerius |
| Elisabeth Versluys | ... | Weeping Wife | |
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Geert Thijssens | ... | Press |
| Rest of cast listed alphabetically: | |||
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Joscik Barbarossa | ||
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Rob Kryt | ||
Produced by
| Howard G. Barnes | ... | executive producer |
| William J. Gell | ... | executive producer |
| George Willoughby | ... | producer (as George W. Willoughby) |
Music by
| John Scott | ... | (as Patrick John Scott) |
Cinematography by
| Gerry Fisher | ||
Editing by
| Barry Peters | ||
Casting By
| John Merrick | ||
Production Design by
| Terry Pritchard | ||
Makeup Department
| Tom Smith | ... | makeup artist |
Production Management
| John Bremer | ... | production manager |
| Wim Lindner | ... | production manager: Netherlands |
Second Unit Director or Assistant Director
| Antal Kovacs | ... | assistant director (as Tony Kovacs) |
| Thom Noble | ... | second unit director |
Sound Department
| Maurice Askew | ... | sound recordist |
| Graham Harris | ... | dubbing editor |
| Brian Marshall | ... | recording director |
Camera and Electrical Department
| Bob Bremner | ... | lighting technician |
| Jimmy Turrell | ... | camera operator |
| David Cadwallader | ... | grip (uncredited) |
Costume and Wardrobe Department
| Shura Cohen | ... | wardrobe |
Music Department
| John Scott | ... | conductor (as Patrick John Scott) / orchestrator (as Patrick John Scott) |
