Ivan Mason / Dr. James Paxton

Derek Farr

Rhona Ellison

Ella Raines

George White - the Gamekeeper

John Welsh

Mrs. Lemmin - the Landlady

Olive Sloane

Prof. Cattrell

Donald Wolfit

Nurse Mitzi

Lisa Daniely

Dr. Manning

Bruce Beeby

Scotland Yard Supt. Davidson

Russell Napier

Dr. Kelly

Cyril Cusack

Medwood Inspector Hayman

Frederick Piper

Dmitri Balinkev

Karl Stepanek

Ambulance Driver

Alfred Maron

Director

Lance Comfort

Novel

Anthony Armstrong

Writer

Guy Morgan

Art Direction

Eric Saw