During the Nazi occupation of Czechoslovakia, surgeon Dr. Franticek Svoboda, a Czech patriot, assassinates the brutal "Hangman of Europe", Reichsprotektor Reinhard Heydrich, and is wounded in the process. In his attempt to escape, he is helped by history professor Stephen Novotny and his daughter Mascha.

Cast: Brian Donlevy, Walter Brennan, Anna Lee, Gene Lockhart, Dennis O'Keefe, Margaret Wycherly