John Gavin as Ernst Graeber

Liselotte Pulver as Elizabeth Kruse

Jock Mahoney as Immerman

Don DeFore as Boettcher

Keenan Wynn as Reuter

Erich Maria Remarque as Professor Pohlmann

Dieter Borsche as Captain Rahe

Barbara Rütting as Woman Guerrilla

Thayer David as Oscar Binding

Charles Regnier as Joseph

Dorothea Wieck as Frau Lieser

Kurt Meisel as Heini

Agnes Windeck as Frau Witte

Clancy Cooper as Sauer

John van Dreelen as Political Officer

Klaus Kinski as Gestapo Lieutenant

Alice Treff as Frau Langer

Alexander Engel as Mad Air Raid Warden

Jim Hutton as Hirschland

Bengt Lindström as Steinbrenner

Wolf Harnisch as Sgt. Muecke

Lisa Helwig as Frau Kleinert

Karl Ludwig Lindt as Dr. Karl Fresenburg (uncredited)

Herbert Weißbach as Waiter (uncredited)

Ralf Wolter as Feldmann (uncredited)