Inspector Webb
John Stuart
Mrs. Robson
Olga Lindo
Sgt. Clapper
Howard Marion-Crawford
Anne Horder
Louise Lord
Caleb Horder
Ronald Adam
Peter Robson
John Varley
Philip Grahame
Cyril Conway
Angus
Jock McKay
Toni
Barbara Madock
Lucy
Jean Short
Director
Mario Zampi
Producer
Director of Photography
Bryan Langley
Sound Effects
Giulio Zampi
Sound Recordist
Charles T. Parkhouse
Writer
Walter C. Mycroft
Editor
Camera Operator
Drummond Drury
Continuity
Kathleen Connors
Assistant Director
Donald Wynne
Art Direction
C.P. Norman