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Roland Young as George McWhirter Fotheringay |
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Ralph Richardson as Colonel Winstanley |
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Edward Chapman as Major Grigsby |
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Ernest Thesiger as Maydig |
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Joan Gardner as Ada Price |
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Sophie Stewart as Maggie Hooper |
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Robert Cochran as Bill Stoker |
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Lady Tree as Grigsby's Housekeeper |
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Laurence Hanray as Mr. Bamfylde |
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George Zucco as The Colonel's Butler |
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Wallace Lupino as Constable Winch |
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Joan Hickson as Effie |
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Wally Patch as Supt. Smithnells |
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Mark Daly as Toddy Beamish |
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George Sanders as Indifference - a God |
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Torin Thatcher as Observer |
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Michael Rennie as San Francisco Cop |
| Writing | Lajos Biró | Writer |
| Writing | H. G. Wells | Writer |
| Directing | Lothar Mendes | Director |
| Crew | Edward Cohen | Special Effects |
| Sound | Mischa Spoliansky | Original Music Composer |
| Visual Effects | Ned Mann | Special Effects Supervisor |
| Crew | Lawrence W. Butler | Special Effects |
| Production | Alexander Korda | Producer |
| Editing | Philip Charlot | Editor |
| Camera | Harold Rosson | Director of Photography |
| Costume & Make-Up | John Armstrong | Costume Design |
| Crew | Harry Zech | Special Effects |
| Art | Vincent Korda | Set Designer |
| Sound | Muir Mathieson | Music Director |
| Directing | Imlay Watts | Assistant Director |
| Production | David B. Cunynghame | Production Manager |
| Editing | William Hornbeck | Supervising Editor |
| Sound | A.W. Watkins | Sound Director |
