Ernst Lubitsch	...	(Director)
Melchior Lengyel, Edwin Justus Mayer	...	(Writer)
Carole Lombard	...	Maria Tura
Jack Benny	...	Joseph Tura
Robert Stack	...	Lt. Stanislav Sobinski
Felix Bressart	...	Greenberg
Lionel Atwill	...	Rawitch
Stanley Ridges	...	Prof. Alexander Siletsky
Sig Ruman	...	Col. Ehrhardt
Tom Dugan	...	Bronski
Charles Halton	...	Dobosh, Theatrical Producer
George Lynn	...	Actor Playing Hitler's Adjutant, et al.
Henry Victor	...	Capt. Schultz
Maude Eburne	...	Anna, Maria's maid
Halliwell Hobbes	...	Gen. Armstrong
Miles Mander	...	Maj. Cunningham
Olaf Hytten	...	Polonius in Warsaw
Werner R. Heymann	...	Composer
Rudolph Maté	...	Cinematographer
Dorothy Spencer	...	Editor
Vincent Korda	...	Production Designer
Julia Heron	...	Set Decorator

Summary: In occupied Poland during WWII, a troupe of ham stage actors (led by Joseph Tura and his wife Maria) match wits with the Nazis. A spy has information which would be very damaging to the Polish resistance and they must prevent it's being delivered to the Germans.