William Eythe as Bill Dietrich

Lloyd Nolan as Agent George A. Briggs

Signe Hasso as Elsa Gebhardt

Gene Lockhart as Charles Ogden Roper

Leo G. Carroll as Col. Hammersohn

Lydia St. Clair as Johanna Schmidt

William Post Jr. as Walker

Harry Bellaver as Max Cobura

Reed Hadley as Narrator (voice)

Kenneth Konopka as Saboteur

Bruno Wick as Adolf Lange

Harro Meller as Conrad Arnulf

Charles Wagenheim as Gustav Hausmann

Alfred Linder as Adolf Klein

Renee Carson as Luise Vajda

Jack McKee as Dr. Arthur C. Appleton

Rusty Lane as Admiral