Edward G. Robinson

Edward 'Ed' Renard

Francis Lederer

Kurt Schneider

George Sanders

Franz Schlager

Paul Lukas

Dr. Kassell

Henry O'Neill

Attorney Kellogg

Dorothy Tree

Hilda Kleinhauer

Lya Lys

Erika Wolf

Grace Stafford

Mrs. Schneider

James Stephenson

British Military Intelligence Agent

Hedwiga Reicher

Mrs. Kassell

Joe Sawyer

Werner Renz

Sig Ruman

Krogman

Lionel Royce

Hintze

Henry Victor

Wildebrandt

Hans Heinrich von Twardowski

Helldorf

Wolfgang Zilzer

Westphal

Frederick Vogeding

Captain Richter

Willy Kaufman

Greutzwald

Rudolph Anders

Captain Straubel

Wilhelm von Brincken

Captain von Eichen

George Rosener

Klauber

Frederick Burton

U.S. District Court Judge

Eily Malyon

Mrs. McLaughlin

Bodil Rosing

Passenger on Boat

John Deering

Narration by

Louis Adlon

Fred Aldrich

Nazi at Bund Meeting

Sherwood Bailey

Newsboy at End

Ward Bond

American Legionnaire

Walter Bonn

Naval Officer Seeing Renard at Seaplane

Egon Brecher

Fritz Muller - German Agent

Tommy Bupp

Shoeshine Boy

Glen Cavender

Man in Montage Stuffing Mailboxes

John Conte

Radio Announcer (voice)

Alec Craig

McGregor - Scottish Postman

Jimmie Dundee

Nazi Goon at Bund Meeting

Jack Egger

Frederick Giermann

German-American at Bund Meeting

Lisa Golm

Mrs. Anna Westphal

Sol Gorss

Nazi Goon at Bund Meeting

William Gould

FBI Agent

Fred Graham

American Legionnaire at Bund Meeting

Creighton Hale

Draftsman

John Harron

Man in Montage with Propaganda

Eddie Hart

Nazi Agent

Adolf Hitler

Himself (archive footage)

Max Hoffman Jr.

Soldier at Renz's Arrest

Stuart Holmes

Draftsman

Arthur Stuart Hull

U.S. Government Agent

Selmer Jackson

Customs Official

Edward Keane

FBI Agent

Robert Emmett Keane

Harrison - Passport Official

Milton Kibbee

Man Greeting Waiter Bill (archive footage)

Martin Kosleck

Joseph Goebbels

Frank Mayo

FBI Agent Phillips

Lon McCallister

Ray Miller

Bill - Coffee Shop Proprietor

Walter Miller

Bill - Waiter with Coffee

Jack Mower

FBI Agent 'Mac' MacDonald

George Offerman Jr.

Western Union Messenger

Lotte Palfi Andor

Kassel's Nurse

Steve Pendleton

Naval Courier

Gil Perkins

Goebbels' Aide

Norman Phillips Jr.

Gottfried Simmons - Nazi Youth

Tempe Pigott

Lucien Prival

Kranz

Otto Reichow

Driver of Nazi Car That Crashed

John Ridgely

Army Hospital Clerk

Ferdinand Schumann-Heink

Hans Schumm

Bismarck Officer with Crew List

Lester Sharpe

Charles Sherlock

FBI Agent Fred Young

Edwin Stanley

U.S. Official

Rudolf Steinboeck

Robert R. Stephenson

Fritz - von Eichen's Aide

Regis Toomey

Tom - in Coffee Shop

Frederic Tozere

FBI Agent Staunton

Charles Trowbridge

Maj. Williams

Emmett Vogan

Hotel Desk Clerk

Dave Wengren

John Hamilton

FBI Chief