Overview
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.
Cast & Crew
Director: Basil Dearden
Cast: Will Hay, John Mills, Basil Sydney, Felix Aylmer, Thora Hird, Henry Hewitt, Owen Reynolds, Frank Cellier, Joss Ambler, Frank Allenby, Margaret Halstan, Barbara Valerie
