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Sven-Bertil Taube as Paul Sherman |
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Barbara Parkins as Maggie |
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Alexander Knox as Colonel De Graaf |
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Patrick Allen as Inspector Van Gelder |
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Vladek Sheybal as Meegeren |
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Ania Marson as Astrid Lemay |
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Penny Casdagli as Trudi |
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Peter Hutchins as The Assassin |
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Drewe Henley as Jimmy Duclos |
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Henny Orri as Herta |
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Stewart F. Lane as George Lemay |
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Mark Malicz as Morgenstern |
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Michael Mellinger as Hotel Manager |
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Mieczysław Malicz as Morgenstern |
| Writing | Alistair MacLean | Novel |
| Writing | Paul Wheeler | Screenplay |
| Writing | Alistair MacLean | Writer |
| Writing | Don Sharp | Writer |
| Directing | Geoffrey Reeve | Director |
| Directing | Terence Churcher | Assistant Director |
| Crew | Jack Hildyard | Cinematography |
| Production | Maude Spector | Casting |
| Art | Geoffrey Tozer | Art Direction |
| Directing | Don Sharp | Director |
| Production | Kurt Unger | Producer |
| Editing | Bill Lenny | Editor |
| Art | Peter Mullins | Production Design |
| Directing | Barry Langley | Assistant Director |
| Sound | Piero Piccioni | Original Music Composer |
