FBI agent Ed Renard investigates the pre-War espionage activities of the German-American Bund.
Edward G. Robinson
as Edward 'Ed' Renard
Francis Lederer
as Kurt Schneider
George Sanders
as Franz Schlager
Paul Lukas
as Dr. Kassell
Henry O'Neill
as Attorney Kellogg
Dorothy Tree
as Hilda Kleinhauer
Lya Lys
as Erika Wolf
Grace Stafford
as Mrs. Schneider
James Stephenson
as British Military Intelligence Agent
Hedwiga Reicher
as Mrs. Kassell
Joe Sawyer
as Werner Renz
Sig Ruman
as Krogman
