Boris Karloff

James Rankin

Jean Kent

Cora Seth

Elizabeth Allan

Barbara Rankin

Anthony Dawson

Supt. Burk

Vera Day

Pearl

Tim Turner

Dr. Kenneth McColl

Diane Aubrey

Lily Rankin

Max Brimmell

Newgate Prison Turnkey

Leslie Perrins

Newgate Prison Governor

Jessica Cairns

Asylum Maid

Dorothy Gordon

Hannah

Desmond Roberts

Dr. Johnson

Roy Russell

Medical Superintendent

Derek Birch

Guyse Hospital Superintendent

Peggy Ann Clifford

Kate

John Fabian

Young Blood

Joan Elvin

Can-Can Girl

Audrey Sykes

Laughing Lady at Hanging (uncredited)

Marie Devereux

Show Girl (uncredited)

Robert Day

Director

John Croydon

Producer

Richard Gordon

Producer

John Croydon

Writer

Jan Read

Writer

Richard Gordon

Executive Producer

Peter Mayhew

Editor

Buxton Orr

Original Music Composer

Lionel Banes

Director of Photography

Barbara Barnard

Hairstylist

Jim Hydes

Makeup Artist

Ronald Kinnoch

Production Manager

Douglas Hickox

Assistant Director

John Elphick

Set Designer

Les Bowie

Special Effects

Anna Duse

Costume Supervisor

Leo Rogers

Camera Operator

Terry Poulton

Sound Editor

Hazel Swift

Script Supervisor

Frederic Lewis

Conductor

Jan Read

Original Story

H.C. Pearson

Sound Recordist