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

Lionel Royce as Hintze

Henry Victor as Wildebrandt

Hans Heinrich von Twardowski as Helldorf

Wolfgang Zilzer as Westphal

Frederick Vogeding as Captain Richter

Willy Kaufman as Greutzwald

Rudolph Anders as Captain Straubel

Wilhelm von Brincken as Captain von Eichen

George Rosener as Klauber

Frederick Burton as U.S. District Court Judge

Eily Malyon as Mrs. McLaughlin

Bodil Rosing as Passenger on Boat

John Deering as Narration by

Louis Adlon as Nazi American Youth Leader (uncredited)

Fred Aldrich as Nazi at Bund Meeting (uncredited)

Sherwood Bailey as Newsboy at End (uncredited)

Ward Bond as American Legionnaire (uncredited)

Walter Bonn as Naval Officer Seeing Renard at Seaplane (uncredited)

Egon Brecher as Fritz Muller - German Agent (uncredited)

Tommy Bupp as Shoeshine Boy (uncredited)

Glen Cavender as Man in Montage Stuffing Mailboxes (uncredited)

John Conte as Radio Announcer (voice) (uncredited)

Alec Craig as McGregor - Scottish Postman (uncredited)

Jimmie Dundee as Nazi Goon at Bund Meeting (uncredited)

Jack Egger as (uncredited)

Frederick Giermann as German-American at Bund Meeting (uncredited)

Lisa Golm as Mrs. Anna Westphal (uncredited)

Sol Gorss as Nazi Goon at Bund Meeting (uncredited)

William Gould as FBI Agent (uncredited)

Fred Graham as American Legionnaire at Bund Meeting (uncredited)

Creighton Hale as Draftsman (uncredited)

John Hamilton as FBI Chief (uncredited)

John Harron as Man in Montage with Propaganda (uncredited)

Eddie Hart as Nazi Agent (uncredited)

Adolf Hitler as Self (archive footage) (uncredited)

Max Hoffman Jr. as Soldier at Renz's Arrest (uncredited)

Stuart Holmes as Draftsman (uncredited)

Arthur Stuart Hull as U.S. Government Agent (uncredited)

Selmer Jackson as Customs Official (uncredited)

Edward Keane as FBI Agent (uncredited)

Robert Emmett Keane as Harrison - Passport Official (uncredited)

Milton Kibbee as Man Greeting Waiter Bill (archive footage) (uncredited)

Martin Kosleck as Joseph Goebbels (uncredited)

Frank Mayo as FBI Agent Phillips (uncredited)

Lon McCallister as (uncredited)

Ray Miller as Bill - Coffee Shop Proprietor (uncredited)

Walter Miller as Bill - Waiter with Coffee (uncredited)

Jack Mower as FBI Agent 'Mac' MacDonald (uncredited)

George Offerman, Jr. as Western Union Messenger (uncredited)

Lotte Palfi Andor as Kassel's Nurse (uncredited)

Steve Pendleton as Naval Courier (uncredited)

Gil Perkins as Goebbels' Aide (uncredited)

Norman Phillips Jr. as Gottfried Simmons - Nazi Youth (uncredited)

Tempe Pigott as (uncredited)

Lucien Prival as Kranz (uncredited)

Otto Reichow as Driver of Nazi Car That Crashed (uncredited)

John Ridgely as Army Hospital Clerk (uncredited)

Ferdinand Schumann-Heink as (uncredited)

Hans Schumm as Bismarck Officer with Crew List (uncredited)

Lester Sharpe as (uncredited)

Charles Sherlock as FBI Agent Fred Young (uncredited)

Edwin Stanley as U.S. Official (uncredited)

Rudolf Steinboeck as (uncredited)

Robert R. Stephenson as Fritz - von Eichen's Aide (uncredited)

Regis Toomey as Tom - in Coffee Shop (uncredited)

Frederic Tozere as FBI Agent Staunton (uncredited)

Charles Trowbridge as Maj. Williams (uncredited)

Emmett Vogan as Hotel Desk Clerk (uncredited)

Dave Wengren as (uncredited)