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Anthony Bushell as Det. Insp. Forsythe |
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Jane Baxter as Linda Kent |
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Arthur Macrae as Gilbert Kent |
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Ronald Squire as Jim Kent |
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Margaret Rutherford as Evelyn Summers aka Miss Butterby |
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Austin Trevor as Swiss Hotelier-Gang Leader |
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Davina Whitehouse as Goldie, the maid |
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Athole Stewart as Mr. Kent |
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Katie Johnson as Emily Kent |
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Felix Aylmer as Police Commissioner |
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George Merritt as Police constable |
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Wally Patch as Thug |
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Victor Rietti as Luggage Snatcher (uncredited) |
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Hal Gordon as Det. Sergeant Helmsley |
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Ralph Truman as Second Thug (uncredited) |
| Directing | Bernard Vorhaus | Director |
| Writing | L. du Garde Peach | Adaptation |
| Writing | Michael Hankinson | Adaptation |
| Crew | Paul Hervey Fox | Additional Dialogue |
| Crew | Arthur Macrae | Additional Dialogue |
| Production | Julius Hagen | Producer |
| Camera | Curt Courant | Director of Photography |
| Editing | Ralph Kemplen | Editor |
| Art | Andrew Mazzei | Art Direction |
| Sound | Baynham Honri | Sound Recordist |
| Sound | Leo Wilkins | Sound Recordist |
| Camera | Otto Martini | Additional Photography |
| Camera | Kurt Neubert | Additional Photography |
| Sound | W.L. Trytel | Music Director |
| Directing | James Davidson | Assistant Director |
| Writing | Neil Grant | Theatre Play |
