
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.
William Potts / Muller

Professor Hoffman

General Von Glotz

Max

Kurt

Krauss

Hans
Lena
Vogel
A.D.C.

Schmidt

Rector

Maj. Bishop

Col. Truscott
British Pilot
MI5 Man (uncredited)
Detective Carter (uncredited)
German Soldier on Train

German Pilot
SS Guard

German Officer at Station

Airport Official

Member of the General Staff
Passenger Arrested on Train

Train Passenger
1st Observer (uncredited)

SS Guard (uncredited)

Detective Evans (uncredited)
SS Officer on Train (uncredited)