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Robert Ryan as Richard Ashley |
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Stewart Granger as Duke Of Orgagna |
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Nadia Gray as Cosima |
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Katherine Woodville as Elena |
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Marius Goring as Harlequin |
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George Coulouris as Carlo |
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Robert Rietti as Police Chief |
| Directing | Don Chaffey | Director |
| Production | Jack O. Lamont | Executive Producer |
| Art | Mirko Lipužič | Production Design |
| Art | John Brason | Art Direction |
| Costume & Make-Up | Anne Box | Hairdresser |
| Costume & Make-Up | Geoffrey Rodway | Makeup Artist |
| Production | George Fowler | Production Manager |
| Production | Gorazd Koncar | Unit Manager |
| Directing | Dennis Bertera | Assistant Director |
| Directing | Dragoljub Stojanivic | Assistant Director |
| Directing | Yvonne Axeworthy | Continuity |
| Sound | Bojan Adamič | Music Director |
| Costume & Make-Up | Laurel Staffell | Wardrobe Master |
| Camera | David Harcourt | Camera Operator |
| Sound | Edgar Vetter | Sound Mixer |
| Sound | Allan Morrison | Sound Editor |
| Sound | Ken Cameron | Sound Mixer |
| Writing | Morris L. West | Novel |
| Writing | J. Garrison | Writer |
| Writing | Don Chaffey | Writer |
| Production | David Henley | Producer |
| Sound | Bojan Adamič | Original Music Composer |
| Camera | Stephen Dade | Director of Photography |
| Editing | Peter Tanner | Editor |
