Tale of the FBI vs. American Nazis. Mark: John Gabriel. Brand: Broderick Crawford. Bremonte: Keith Andes. Cunk: Robert Dix. Von Dellberg: Kent Taylor. FBI Agents: Scott Brady, Emily Banks. Carol: Vicki Volante. Rocky: Jack Starrett. Shop Owner: John Carradine. Von Dellberg's Daughter: Erin O'Donnell.