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Boris Karloff as Colonel March |
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Ewan Roberts as Inspector Ames |
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Joan Sims as Marjorie Dawson |
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Richard Wattis as Cabot |
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Sheila Burrell as Joan Forsythe |
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Anthony Forwood as Jim Hartley |
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Ronald Leigh-Hunt as Ireton Bowlder |
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Patricia Owens as Betty Hartley |
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John Hewer as John Parrish |
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Roger Maxwell as Maj. Rodman |
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Bernard Rebel as The Count |
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Dana Wynter as Francine Rapport |
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Marianne Stone as Customer in Bank (uncredited) |
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Peter Butterworth as Bank Clerk (uncredited) |
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Sonya Hana as Paula |
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Nita Valerie as Librarian |
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Cy Endfield as Man leaving British Museum library (uncredited) |
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Pat Hagan as Police Constable at Bank (uncredited) |
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Victor Harrington as Customer in Bank (uncredited) |
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Charles Saynor as Police Constable (uncredited) |
| Production | Donald Ginsberg | Producer |
| Directing | Cy Endfield | Director |
| Sound | Eric Cass | Boom Operator |
| Camera | Desmond Davis | Focus Puller |
