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Elisabeth Bergner as Sylvina Lawrence / Martina Lawrence |
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Michael Redgrave as Alan MacKenzie |
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Wilfrid Lawson as Thomas E. Lawrence |
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Mabel Terry-Lewis as Aunt Helen |
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Richard Ainley as Morgan |
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Kenneth Buckley as Garrett |
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Daniel Mendaille as Old Pauliac |
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Pierre Juvenet as Doctor |
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Stella Arbenina as Nurse |
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Kaye Seeley as Maturin |
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Ernest Ferny as Police Supt. Demangeon |
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Cot D'Ordan as Clerk |
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Dorice Fordred as Eileen |
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Annie Esmond as Cook |
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Clement McCallin as Karal Anderson |
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Oliver Johnston as Prof. Bardesley |
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Roy Russell as British Minister |
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Homer Regus as Mayor |
| Directing | Paul Czinner | Director |
| Writing | Karel Josef Beneš | Novel |
| Writing | Margaret Kennedy | Adaptation |
| Production | Paul Czinner | Producer |
| Editing | Frederick Wilson | Editor |
| Costume & Make-Up | Joe Strassner | Costume Design |
| Costume & Make-Up | Dorrie Hamilton | Makeup Artist |
| Camera | Philip Tannura | Director of Photography |
| Art | John Bryan | Art Direction |
| Sound | William Walton | Original Music Composer |
