
Schoolteacher William Potts is the double of a captured German spy, so he is sent to Germany by British Intelligence to obtain the plans of a new secret weapon, causing chaos in a Hitler Youth school in the process.
Cast

Will Hay
William Potts / Muller

Frank Pettingell
Professor Hoffman

Julien Mitchell
General Von Glotz

Charles Hawtrey
Max

Barry Morse
Kurt

Peter Ustinov
Krauss
Peter Croft
Hans
Anne Firth
Lena
Leslie Harcourt
Vogel

Jeremy Hawk
A.D.C.

Raymond Lovell
Schmidt

Aubrey Mallalieu
Rector

John Williams
Maj. Bishop
Lawrence O'Madden
Col. Truscott
John Boxer
British Pilot
Clifford Buckton
MI5 Man (uncredited)
Arthur Denton
Detective Carter (uncredited)

Leslie Dwyer
German Soldier on Train
Richard George
German Pilot

Walter Gotell
SS Guard

William Hartnell
German Officer at Station

Bryan Herbert
Airport Official
Vincent Holman
Member of the General Staff

Charles Paton
Passenger Arrested on Train
Lloyd Pearson
Train Passenger

Johnnie Schofield
1st Observer (uncredited)

Harry Terry
SS Guard (uncredited)
Jack Vyvyan
Detective Evans (uncredited)
H Victor Weske
SS Officer on Train (uncredited)
Crew

Basil Dearden
Director

Will Hay
Director

Angus MacPhail
Screenplay
John Dighton
Screenplay
Ray Pitt
Editor
Ernest Palmer
Director of Photography
John Croydon
Production Supervisor

Michael Balcon
Producer
Len Page
Sound Recordist
Roy Kellino
Special Effects
Bretton Byrd
Music

Bernard Miles
Idea
Reg Groves
Idea
Thomas N. Morahan
Art Direction
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