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Forrest Tucker as Baron Keller |
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Eva Bartok as Baron Keller |
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Marius Goring as Baron Keller |
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Guy Middleton as Maj. Hobart |
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Eric Pohlmann as Emile |
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Arnold Marlé as Prof. Pal Kudnic |
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Fred Johnson as Chief Agent Farquarson |
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David King-Wood as Col. Patchway |
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Reginald Beckwith as Dusty |
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Guido Lorraine as Franz |
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Andre Mikhelson as Russian thug answering Ludwigstrasse door |
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Stanley Zevic as Russian thug #2 at Ludwigstrasse address |
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Marne Maitland as The phony Kudnic |
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Arthur Lovegrove as Bert |
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Derek Prentice as Keller's butler |
| Writing | Val Guest | Writer |
| Directing | Val Guest | Director |
| Production | Michael Carreras | Producer |
| Editing | Bill Lenny | Editor |
| Production | Mickey Delamar | Associate Producer |
| Writing | Robin Estridge | Novel |
| Sound | Doreen Carwithen | Music |
| Camera | Walter J. Harvey | Director of Photography |
| Sound | John Hollingsworth | Music Director |
| Art | J. Elder Wills | Art Direction |
| Production | Jimmy Sangster | Production Manager |
| Sound | H.C. Pearson | Sound Recordist |
| Sound | Ken Cameron | Sound Recordist |
| Directing | Bill Shore | Assistant Director |
| Directing | Connie Willis | Continuity |
| Camera | Len Harris | Camera Operator |
| Sound | Dino Di Campo | Sound Editor |
| Costume & Make-Up | Philip Leakey | Makeup Artist |
| Costume & Make-Up | Monica Hustler | Hairdresser |
| Costume & Make-Up | Molly Arbuthnot | Wardrobe Master |
