Discover
Boris Karloff
Dr. Thomas Bolton
Betta St. John
Susan
Christopher Lee
Resurrection Joe
Finlay Currie
Supt. Charles Matheson
Adrienne Corri
Rachel
Francis de Wolff
Black Ben
Francis Matthews
Jonathan Bolton
Frank Pettingell
Mr. Blount
Basil Dignam
Hospital Chairman
Nigel Green
Insp. Donovan
Yvonne Romain
Rosa (as Yvonne Warren)
Howard Lang
Chief Inspector
Charles Lloyd Pack
Hardcastle
Bernard Archard
Hospital Official
Marianne Stone
Arrested Woman (uncredited)
Desmond Llewelyn
Operations Assistant (uncredited)
Skip Martin
(uncredited)
Art
Anthony Masters
Art Direction
Camera
Geoffrey Faithfull
Director of Photography
Crew
Maurice Askew
Sound Recordist
Directing
Robert Day
Director
Peter Bolton
Assistant Director
Michael Stevenson
Third Assistant Director
Susan Dyson
Continuity
Editing
Peter Mayhew
Editor
Production
John Croydon
Producer
Charles F. Vetter
Producer
Richard Gordon
Executive Producer
Peter Mayhew
Associate Producer
George Mills
Production Manager
Writing
Jean Scott Rogers
Screenplay
Art
Anthony Masters
Art Direction
Camera
Geoffrey Faithfull
Director of Photography
Crew
Maurice Askew
Sound Recordist
Directing
Robert Day
Director
Peter Bolton
Assistant Director
Michael Stevenson
Third Assistant Director
Susan Dyson
Continuity
Editing
Peter Mayhew
Editor
Production
John Croydon
Producer
Charles F. Vetter
Producer
Richard Gordon
Executive Producer
Peter Mayhew
Associate Producer
George Mills
Production Manager
Writing
Jean Scott Rogers
Screenplay