Eccentric Cambridge archaeologist Horatio Smith takes a group of British and American archaeology students to pre-war Nazi Germany to help in his excavations. His research is supported by the Nazis, since he professes to be looking for evidence of the Aryan origins of German civilisation. However, he has a secret agenda: to free inmates of the concentration camps.
| Writing | Anatole de Grunwald | Screenplay |
| Directing | Leslie Howard | Director |
| Crew | Mutz Greenbaum | Technical Supervisor |
| Writing | A. G. MacDonell | Original Story |
| Writing | Wolfgang Wilhelm | Original Story |
| Art | Duncan Sutherland | Settings |
| Production | Harold Huth | Associate Producer |
| Editing | Douglas Myers | Editor |
| Sound | John Greenwood | Original Music Composer |
| Sound | A.W. Watkins | Recording Supervision |
| Camera | Mutz Greenbaum | Director of Photography |
| Sound | Muir Mathieson | Music Director |
| Sound | John Dennis | Sound Recordist |
| Production | Phil C. Samuel | Production Manager |
| Production | Leslie Howard | Producer |
| Writing | Roland Pertwee | Scenario Writer |
| Directing | George Pollock | Assistant Director |
| Writing | Anatole de Grunwald | Scenario Writer |
| Editing | Sidney Cole | Editorial Manager |
| Camera | Jack Hildyard | Camera Operator |
| Writing | Baroness Emmuska Orczy | Novel |
