Brian Donlevy
Dr. Franticek Svoboda
Walter Brennan
Prof. Stephen Novotny
Anna Lee
Masha Novotny
Gene Lockhart
Emil Czaka
Dennis O'Keefe
Jan Horak
Margaret Wycherly
Ludmilla Novotny
Nana Bryant
Mrs. Hellie Novotny
William Roy
Boda Novotny
Hans Heinrich von Twardowski
Reinhard Heydrich
Alexander Granach
Gestapo Insp. Alois Gruber
Tonio Selwart
Chief of Gestapo Kurt Haas
Jonathan Hale
Dedic
Lionel Stander
Banya
Sarah Padden
Mrs. Georgia Dvorak
Edmund MacDonald
Dr. Pillar
Byron Foulger
Bartos
Virginia Farmer
Mrs. Nimitz
Ludwig Donath
Schirmer
George Irving
Neeval
James Bush
Peacock
Arno Frey
Camp Lieutenant Itnut
Lester Sharpe
Rudy
Arthur Loft
Gen. Votruba
Reinhold Schünzel
Gestapo Insp. Ritter
Chester Conklin
Cook (uncredited)
Claire McDowell
Counterwoman (uncredited)
John Abbott
Hostage (scenes deleted)
Louis Adlon
Adjutant (uncredited)
Erville Alderson
Liberal Official (uncredited)
Richard Alexander
Slugger in Theater (uncredited)
Dwight Frye
Hostage
Ralph Dunn
Czech Policeman (uncredited)
Bud Jamison
Fat Man (uncredited)
Philip Van Zandt
Officer (uncredited)
Sam Harris
Man at Briefing (uncredited)