Brian Donlevy (Dr. Franz Svoboda)
Walter Brennan (Prof. Stephan Novotny)
Anna Lee (Mascha Novotny)
Gene Lockhart (Emil Cruka)
Dennis O'Keefe (Jan Horek)
Philip Merivale (Actor/Actress)
Charles B. Middleton (Actor/Actress)
Otto Reichow (Gestapo)
Philip Van Zandt (Officer)
Emmett Vogan (Actor/Actress)
Hans Heinrich Von Twardowski (Reinhard Heydrich)
Eddy Waller (Cab Driver)
Reinhold Schünzel (Inspector Ritter)
Emmett Lynn (Actor/Actress)
Erville Alderson (Liberal Official)
William Benedict (Hostage)
Ralph Dunn (Policeman)
William Haade (Patriot)
Dwight Frye (Actor/Actress)
Tonio Selwart (Haas, Gestapo Chief)
Jonathan Hale (Dedic)
Lionel Stander (Taxi Driver)
Byron Foulger (Bartos)
Virginia Farmer (Landlady)
Ludwig Donath (Schirmer)
Sarah Padden (Mrs. Dvorak)
Edmund MacDonald (Dr. Pilar)
George Irving (Neeval)
James Bush (Peacock)
Arno Frey (Camp Lieutenant)
Lester Sharpe (Rudy, a Hostage)
Arthur Loft (Gen. Votruba Bertruba)
William Farnum (Viktorin)
Alexander Granach (Alois Gruber)
Margaret Wycherly (Aunt Ludmilla Novotny)
Nana Bryant (Mrs. Novotny)
Billy Roy (Beda Novotny)