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)