Stephen 'Steve' Locke

Leslie Howard

Elena Moura

Kay Francis

Bob Medill

William Gargan

Gaston LeFarge

Philip Reed

Sergei Pavlov

Irving Pichel

Under Secretary Stanley

Walter Byron

'Poohbah' Evans

Ivan F. Simpson

Sir Walter Carrister

Halliwell Hobbes

Tito Del Val

Cesar Romero

Commissioner of War Trotsky

J. Carrol Naish

Mr. Kolinoff

Gregory Gaye

Mr. Henry Farmer

Arthur Aylesworth

Paul DeVigney

Alphonse Ethier

Lloyd George (as George Pearce)

George C. Pearce

Lady Catherine Trehearne

Mary Forbes

Mr. X

Frank Reicher

Lenin

Tenen Holtz

Lady Carrister

Doris Lloyd

Count Romano

Paul Porcasi

Zvododu

Addison Richards

Maria Nikolaievna (as Marina Schubert)

Marina Koshetz

Lloyd George

George Pearce

Walter Armitage

Cabinet Member

Thomas Braidon

Russian Policeman (uncredited)

Glen Cavender

Cabinet Member

Basil Lynn

Woman Saying 'Lenin will Live' (uncredited)

Claire McDowell

Cabinet Member

Fred Walton

Cabinet Member

Winter Hall

Undersecretary

Olaf Hytten

Suspect

Frank Lackteen

Suspect

Robert Wilbur

Suspect

Lew Harvey