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Terence Morgan as Johnny O'Flynn |
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Joan Rice as Doreen Wilson |
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Raymond Lovell as Inspector Forsythe |
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Dianne Foster as Sylvia Newman |
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Colin Tapley as Dr. Crabtree |
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Esmond Knight as Prof. Newman |
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Mark Baker as Dr. Metcalfe |
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Cyril Conway as Sgt. Cove |
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Hector Ross as Beroni |
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Arthur Lovegrove as Gilchrist |
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Esma Cannon as Patient in Doctor's Waiting Room |
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Sam Kydd as Chauffeur |
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Michael Balfour as 'The Mae McCleod' Captain |
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Tom Gill as Hotel Receptionist |
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Hal Osmond as Taxi Driver |
| Directing | Robert S. Baker | Director |
| Writing | Roy Chanslor | Story |
| Camera | Desmond Davis | Focus Puller |
| Directing | George Fowler | Assistant Director |
| Production | Robert S. Baker | Producer |
| Directing | Pamela Carlton | Continuity |
| Sound | Leonard Bulkley | Sound Recordist |
| Camera | Gerald Gibbs | Director of Photography |
| Sound | George Burgess | Sound Supervisor |
| Sound | Frank Cordell | Original Music Composer |
| Camera | Dudley Lovell | Camera Operator |
| Writing | John Gilling | Screenplay |
| Costume & Make-Up | Gerry Fairbank | Makeup Artist |
| Production | Monty Berman | Producer |
| Production | Adrian D. Worker | Production Manager |
| Editing | Peter Taylor | Editor |
