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

?

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)

Charles Paton

Handwriting Expert (Uncredited)