Directed by
| Lawrence Huntington | ||
Writing Credits (in alphabetical order)
| John Argyle | ||
| Edward Dryhurst | ||
| David Hume | ... | (novel) |
| David Hume | ... | (screenplay) |
Cast (in credits order)
| James Mason | ... | Mick Cardby | |
| Mary Clare | ... | Matron | |
| Margaret Vyner | ... | Mollie Bennett | |
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Gordon McLeod | ... | Inspector Cardby |
| Frederick Valk | ... | Dr. Moger | |
| Barbara Everest | ... | Mrs. Cardby | |
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Barbara James | ... | Lena Morne |
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G.H. Mulcaster | ... | Lord Morne |
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Eric Clavering | ... | Al meason |
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Terry Conlin | ... | Detective Sergeant Trotter |
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W.G. Fay | ... | Mr. Eslick |
| Brefni O'Rorke | ... | Dr. Crosbie | |
| Viola Lyel | ... | Nurse | |
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Anthony Shaw | ... | Sir Wallace Benson |
| Michael Rennie | ... | Inspector | |
| Rest of cast listed alphabetically: | |||
| John Slater | ... | (uncredited) | |
Produced by
| John Argyle | ... | producer |
Music by
| Guy Jones | ||
Cinematography by
| Bryan Langley | ||
Camera and Electrical Department
| Ronald Anscombe | ... | camera operator |