Sylvia Sidney

Mrs. Verloc

Oskar Homolka

Karl Anton Verloc

Desmond Tester

Steve Verloc

John Loder

Detective Sgt. Ted Spencer

Joyce Barbour

Renee

Matthew Boulton

Scotland Yard Supt. Talbot

S.J. Warmington

Insp. Hollingshead, Scotland Yard

William Dewhurst

The Professor, A.F. Chatman Bird Shop Owner/Bomb Maker

Austin Trevor

Vladimir (uncredited)

Torin Thatcher

Yunct (uncredited)

Aubrey Mather

W. Brown & Sons greengrocer (uncredited)

Peter Bull

Michaelis (uncredited)

Charles Hawtrey

Youth at the Aquarium (uncredited)

Alfred Hitchcock

Reparto

Alfred Hitchcock

Dirección

Michael Balcon

Producción

Charles Bennett

Escritor

E.V.H. Emmett

Escritor

Jesse L. Lasky, Jr.

Escritor

Helen Simpson

Escritor