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Lloyd Bridges as Philip Graham |
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Finlay Currie as Mr. Darius |
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Maureen Swanson as Marina |
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Simone Silva as Mitzi Molnaur |
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Ferdy Mayne as Maxwell Carey |
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Peter Dyneley as Tony Roscoe |
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Roger Delgado as Detective Gonzales |
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George Woodbridge as Inspector Goldfinch |
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Russell Waters as Dr. Zeissman |
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Seymour Green as Rope-Soles |
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Patrick Westwood as Porter |
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Mary Parker as Nancy |
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Jane Asher as Girl (uncredited) |
| Directing | Daniel Birt | Director |
| Production | Michael Carreras | Executive Producer |
| Production | Robert Dunbar | Producer |
| Camera | Walter J. Harvey | Director of Photography |
| Art | J. Elder Wills | Art Direction |
| Editing | James Needs | Editor |
| Writing | Nicolas Bentley | Novel |
| Writing | Daniel Birt | Writer |
| Writing | Robert Dunbar | Writer |
| Sound | Michael Krein | Original Music Composer |
| Production | Jimmy Sangster | Production Manager |
| Directing | Jack Causey | Assistant Director |
| Sound | Sydney Wiles | Sound Recordist |
| Camera | Len Harris | Camera Operator |
| Directing | Renée Glynne | Continuity |
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Costume & Make-Up | Eileen Bates | Hairstylist |
| Costume & Make-Up | Molly Arbuthnot | Wardrobe Master |
