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Michael Gough as Donald Edwards |
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Erika Remberg as Helene Edwards |
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Hans von Borsody as Kersten |
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John Justin as Robert Vaughan |
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Paul Whitsun-Jones as Phillips |
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Vanda Godsell as Betty Conlon |
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Anneke Wills as Jacqueline |
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Jerold Wells as Police Inspector |
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Victor Charrington as Barman |
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Ray Smith as Chauffeur |
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Norma Parnell as Guest at Party |
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Odette Nash as Guest at Party |
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Gabriella Licudi as Guest at Party |
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Luanshya Greer as Guest at Party |
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Richard Bidlake as Guest at Party |
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Mike Hall as Guest at Party |
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Robin Phillips as Guest at Party |
| Writing | Edgar Wallace | Short Story |
| Writing | Lukas Heller | Writer |
| Directing | David Villiers | Director |
| Production | Jack Greenwood | Producer |
| Production | Jim O'Connolly | Associate Producer |
| Sound | Charles Blackwell | Original Music Composer |
| Camera | Bert Mason | Director of Photography |
| Editing | Bernard Gribble | Editor |
| Production | Ronnie Curtis | Casting Director |
| Art | Peter Proud | Art Direction |
| Costume & Make-Up | Hilda Fox | Hairdresser |
| Costume & Make-Up | Aldo Manganaro | Makeup Artist |
| Production | Joe Levy | Production Manager |
| Directing | Ted Lewis | Assistant Director |
| Sound | Ronald Abbott | Sound Recordist |
| Sound | Sidney Rider | Sound Recordist |
| Sound | Allan Sones | Sound Editor |
| Camera | Herbert Smith | Camera Operator |
| Costume & Make-Up | Eileen Welch | Wardrobe Master |
