The Door with Seven Locks

Leslie Banks

Dr. Manetta

Lilli Palmer

June Lansdowne

Cathleen Nesbitt

Ann Cody

Gina Malo

Glenda Baker

David Horne

Edward Havelock

Romilly Lunge

Dick Martin

Richard Bird

Inspector Cornelius 'Andy' Sneed

J.H. Roberts

Luis Silva

Aubrey Mallalieu

Lord Charles Francis Selford

Charles Paton

Handwriting Expert (Uncredited)

Harry Hutchinson

Bevan Cody

Phil Ray

Tom Cawler

George Street

Chief Commissioner

Ross Landon

John Selford

Raymond Mander

P.C. in Sneed's Office (Uncredited)

George Street

Chief Commissioner (Uncredited)