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Peter Murray-Hill as Capt. Johnnie Gray |
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Sally Gray as Claire Kent |
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Gibb McLaughlin as Mr. J.G. Reeder |
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Malcolm Keen as Peter Kent |
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Leslie Perrins as Jeffrey Legge (Maj. Jeffrey Floyd) |
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Sarah Seegar as Lila Legge |
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D.J. Williams as Emmanuel Legge |
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Rex Carvel as Sir John Flaherty |
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Robert Cochran as Det. Insp. Barker |
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Philip Ray as Fenner |
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Bobbie Comber as Gray's butler |
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Florence Groves as Daisy, club desk-clerk |
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George Merritt as Bert Stevens, club porter |
| Directing | Jack Martin | Assistant Director |
| Sound | Frank Midgley | Sound Recordist |
| Art | Duncan Sutherland | Art Department Manager |
| Sound | Ronnie Munro | Music |
| Crew | Elizabeth Meehan | Treatment |
| Directing | Norman Lee | Director |
| Writing | Victor Kendall | Scenario Writer |
| Production | John Corfield | Producer |
| Writing | Doreen Montgomery | Scenario Writer |
| Writing | Edgar Wallace | Novel |
| Crew | Eric Cross | Cinematography |
| Editing | Ted Richards | Editor |
| Production | George Collins | Production Manager |
