A professor teaching at a correspondence school discovers that a Nazi agent is trying to prevent a trade treaty being signed between England and South America.
Basil Dearden | Director |
Will Hay | Director |
Angus MacPhail | Original Story |
Angus MacPhail | Screenplay |
Michael Balcon | Producer |
John Dighton | Screenplay |
John Croydon | Production Manager |
Thomas N. Morahan | Art Direction |
Ernest Irving | Music Director |
John Dighton | Original Story |