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Bernard Lee as Superintendent Meredith |
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David Knight as Lexman |
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Francis de Wolff as Ramon Karadis |
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Colette Wilde as Grace |
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Christine Shaw as Linda Buckland |
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Stanley Morgan as Sergeant Anson |
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A.J. Brown as Commissioner of Police |
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Richard Caldicot as Fisher |
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Edmond Bennett as Manservant |
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Simon Lack as Jock |
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Anthony Baird as Sergeant Butterfield |
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Gladys Henson as Landlady |
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Alfred Maron as Finch |
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Richard Vernon as Viney |
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Harry Locke as Amis |
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Roy Purcell as Brennan |
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Kenneth Fortescue as Secretary (C.I.D.) |
| Directing | Allan Davis | Director |
| Writing | Philip Mackie | Screenplay |
| Production | Jack Greenwood | Producer |
| Production | Jim O'Connolly | Associate Producer |
| Crew | Brian Rhodes | Cinematography |
| Editing | Bernard Gribble | Editor |
| Production | Ronnie Curtis | Casting Director |
| Art | C. Wilfred Arnold | Art Direction |
| Costume & Make-Up | Michael Morris | Makeup Artist |
| Production | Harry Kratz | Production Manager |
| Directing | Jimmy Komisarjevsky | Assistant Director |
| Sound | Ronald Abbott | Sound Recordist |
| Sound | Derek Holding | Sound Editor |
| Sound | Sidney Rider | Sound Recordist |
| Camera | Alf Hicks | Camera Operator |