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Roger Moore as Lord Brett Sinclair |
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Tony Curtis as Danny Wilde |
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Laurence Naismith as Judge Fulton |
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Terence Morgan as Carl Foster |
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Imogen Hassall as Maria |
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Alex Scott as Coley |
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Michael Godfrey as Dupont |
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Neal Arden as Inspector Flavel |
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Joan Collins as Sidonie |
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Robert Hutton as Frank Rocco |
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Robert Rietti as Torino |
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Ian Thompson as Vasile |
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Ferdy Mayne as Count Sangallo |
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Jean Marsh as Nicola |
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Arnold Diamond as Brusati |
| Writing | Brian Clemens | Writer |
| Directing | Val Guest | Director |
| Directing | Basil Dearden | Director |
| Writing | Terry Nation | Writer |
| Editing | Derek Chambers | Editor |
| Editing | Bert Rule | Editor |
| Camera | Tony Spratling | Director of Photography |
| Production | Robert S. Baker | Producer |
| Sound | Ken Thorne | Original Music Composer |
