Blackmail

Anny Ondra

Alice White

Sara Allgood

Mrs. White

Charles Paton

Mr. White

John Longden

Detective Frank Webber

Donald Calthrop

Tracy

Cyril Ritchard

The Artist

Hannah Jones

The Landlady

Harvey Braban

The Chief Inspector

E

Ex-Det. Sergt. Bishop

The Detective Sergeant

Alfred Hitchcock

Man on Subway (uncredited)

Alfred Hitchcock

Director

J

John Maxwell

Producer

Michael Powell

Writer