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Cec Linder as Joe Armstrong |
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Zena Marshall as Carola |
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Nigel Davenport as Larry Mason |
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Paul Stassino as Danny Thorne |
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Derek Francis as Supt. Brett |
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John Bryans as Prendergast |
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Derek Partridge as Peter |
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John Glyn-Jones as Harry |
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David Cargill as Johnny |
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Derek Aylward as Phillip-Greene |
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William Dysart as Det. Sgt. Good |
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Kenneth Benda as Lord Chief Justice |
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William Raynor as Clerk of the Court |
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Denis Holmes as Mr. Matthews |
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Dorinda Stevens as Molly |
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Phyllis Rose as Woman in Night Club |
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Sidonie Bond as Reporter |
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John Moore as House Detective |
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John Murray Scott as Reporter |
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Peter Thomas as Reporter |
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Allan Warren as Page Boy |
| Directing | David Eady | Director |
| Writing | Arthur La Bern | Screenplay |
| Writing | Edgar Wallace | Novel |
| Production | Jack Greenwood | Producer |
| Camera | James Wilson | Director of Photography |
| Editing | Derek Holding | Editor |
| Art | Peter Mullins | Art Direction |
| Sound | Bernard Ebbinghouse | Original Music Composer |
| Production | Ronnie Curtis | Casting Director |
| Costume & Make-Up | Anne Box | Hairdresser |
| Costume & Make-Up | Michael Morris | Makeup Artist |
| Production | Ron Fry | Production Manager |
| Directing | Ted Lewis | Assistant Director |
| Sound | Ronald Abbott | Sound Recordist |
| Sound | Brian Blamey | Sound Editor |
| Sound | Sidney Rider | Sound Recordist |
| Camera | Peter Allwork | Camera Operator |