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Jean Kent as Valya |
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Albert Lieven as Zurta |
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Derrick De Marney as George Grant |
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Paul Dupuis as Detective Inspector Jolif |
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Rona Anderson as Joan Maxted |
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David Tomlinson as Tom Bishop |
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Bonar Colleano as Sergeant West |
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Finlay Currie as Alastair McBain |
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Grégoire Aslan as Poirier, the chef |
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Alan Wheatley as Karl/Charles Poole |
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Hugh Burden as Mills |
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David Hutcheson as Denning |
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Claude Larue as Andrée |
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Zena Marshall as Suzanne |
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Leslie Weston as Randall |
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Michael Ward as Elvin |
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Eugene Deckers as Jules |
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Dino Galvani as Pierre |
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George De Warfaz as Chef du Train |
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Gerard Heinz as Ambassador |
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Michael Balfour as Spiegel |
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Robert Rietti as Vincent (voice) |
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Merle Tottenham as Miss Smith |
| Directing | John Paddy Carstairs | Director |
| Writing | William Douglas-Home | Writer |
| Writing | Clifford Grey | Story |
| Production | George H. Brown | Producer |
| Sound | Benjamin Frankel | Music |
| Camera | Jack Hildyard | Director of Photography |
| Editing | Sidney Stone | Editor |
| Art | Ralph W. Brinton | Art Direction |
| Art | Betty Pierce | Assistant Art Director |
| Sound | Kenneth Heeley-Ray | Sound Effects Editor |
| Crew | Charles Staffell | Special Effects |
| Writing | Allan MacKinnon | Screenplay |
| Sound | George Croll | Sound Recordist |
| Sound | John W. Mitchell | Sound Recordist |
