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Maurice Denham as Sir Harold Crossley |
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Nadja Regin as Suzanne Crossley |
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T. P. McKenna as Martin Somers |
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Peter Barkworth as Tom Cotterrell |
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John Miller as Lord Hinchcliffe |
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Ellen McIntosh as Jane Meldrum |
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Iris Russell as Mrs. Webster |
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Victor Brooks as Inspector Boyd |
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Ian Curry as Haldane |
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John Bryans as Artist |
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Cavan Malone as Driving instructor |
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Anthony Ashdown as Reporter |
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Anthony Pendrell as Doctor |
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Jon Luxton as Photographer |
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G.H. Mulcaster as Elderly Man |
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Tony Wall as Young Man |
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Joyce Hemson as 1st Woman |
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Roberta Desti as 2nd Woman |
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Barbara French as 3rd Woman |
| Directing | John Llewellyn Moxey | Director |
| Production | Jack Greenwood | Producer |
| Sound | Bernard Ebbinghouse | Original Music Composer |
| Production | Ronnie Curtis | Casting Director |
| Writing | Robert Banks Stewart | Screenplay |
| Writing | Edgar Wallace | Original Story |
| Camera | James Wilson | Director of Photography |
| Editing | Derek Holding | Editor |
| Art | Peter Mullins | Art Direction |
| 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 |
