Sylvia Sidney

Mrs. Verloc

Oskar Homolka

Karl Verloc - Her Husband

Desmond Tester

Stevie - Her Young Brother

John Loder

Ted

Joyce Barbour

Renee

Matthew Boulton

Superintendent Talbot

S. J. Warmington

Hollingshead

William Dewhurst

The Professor

Clare Greet

Mrs. Jones (uncredited)

Aubrey Mather

Greengrocer (uncredited)

Austin Trevor

Monocle Man (uncredited)

Charles Hawtrey

Studious Youngster (uncredited)

Martita Hunt

The Professor's Daughter (uncredited)

Torin Thatcher

Mr. Verloc's Visitor (uncredited)

Peter Bull

Mr. Verloc's Visitor (uncredited)

Alfred Hitchcock

Man Walking Past the Cinema as the Light Is Renewed

Joseph Conrad

Novel

Alfred Hitchcock

Director

Bernard Knowles

Director of Photography

Charles Bennett

Screenplay

Charles Frend

Editor

Albert Jullion

Art Direction

Stephen Dade

Camera Operator

Michael Balcon

Producer

Albert Whitlock

Scenic Artist

Ivor Montagu

Associate Producer

E. V. H. Emmett

Additional Dialogue

Oscar Friedrich Werndorff

Art Direction

Jack Beaver

Music

Pen Tennyson

Assistant Director

Hubert Bath

Music

Louis Levy

Music

Marianne

Wardrobe Designer

Alma Reville

Continuity

Walt Disney

Thanks

Louis Levy

Music Director

Angelina Cameron

Sound Recordist

Joe Strassner

Costume Designer

Helen Simpson

Dialogue

Ian Hay

Dialogue