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Bernard Lee as Superintendent Meredith |
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Jack Watling as Jack Heath |
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Finlay Currie as Alex Campbell |
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Suzanne Lloyd as Diane Heath |
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Richard Gale as Maddox |
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James Bree as Reynolds |
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Dora Reisser as Anne Wilding |
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Ivor Salter as Mr. White |
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Christa Bergmann as Gretta |
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Billy Milton as Chandler |
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Lawrence Davidson as Warburton |
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Dallas Cavell as Porter |
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Daphne Goddard as Mrs. Lever |
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Michael Stainton as Sergeant Landis |
| Directing | Geoffrey Nethercott | Director |
| Production | Jack Greenwood | Producer |
| Writing | Edgar Wallace | Original Story |
| Writing | Roger Marshall | Screenplay |
| Sound | Bernard Ebbinghouse | Original Music Composer |
| Camera | James Wilson | Director of Photography |
| Editing | Derek Holding | Editor |
| Production | Ronnie Curtis | Casting Director |
| Art | John Blezard | Art Direction |
| Costume & Make-Up | Betty Glasow | Hairdresser |
| Costume & Make-Up | Benny Royston | Makeup Artist |
| Directing | Ted Lewis | Assistant Director |
| Production | Ron Fry | Production Manager |
| Sound | Ronald Abbott | Sound Recordist |
| Sound | Brian Blamey | Sound Editor |
| Sound | Sidney Rider | Sound Recordist |
| Camera | Gerry Massy-Collier | Camera Operator |
