Johnny O'Flynn
Doreen Wilson
Inspector Forsythe
Sylvia Newman
Dr. Crabtree
Prof. Newman
Dr. Metcalfe
Sgt. Cove
Beroni
Gilchrist
Patient in Doctor's Waiting Room
Chauffeur
Director
Story
Focus Puller
Screenplay
Producer
Producer
Original Music Composer
Director of Photography
Editor
Makeup Artist
Production Manager
Assistant Director