"A wheelchair-bound young girl returns to her father's estate after ten years, and although she's told he's away, she keeps seeing his dead body on the estate."
Susan Strasberg
as Penny Appleby
Ronald Lewis
as Robert
Ann Todd
as Jane Appleby
Christopher Lee
as Doctor Pierre Gerrard
John Serret
as Inspector Legrand
Leonard Sachs
as Mr. Spratt
Anne Blake
as Marie the Maid
Fred Johnson
as Father
Madame Lobegue
as Swiss Air Hostess (uncredited)
Bernard Browne
as Gendarme (uncredited)
Frederick Rawlings
as Plainclothes Sergeant (uncredited)
Richard Klee
Brian Jackson
as Plainclothes Officer (uncredited)
Heinz Bernard
Frederick Schrecker
Gordon Sterne
as Policeman (uncredited)
Rodney Burke
Clifton Parker
Original Music Composer
Jimmy Sangster
Writer
Michael Carreras
Executive Producer
Eric Boyd-Perkins
Editor
Douglas Slocombe
Director of Photography
Bernard Robinson
Production Design
Producer
Seth Holt
Director
Desmond Davis
Camera Operator
Eileen Bates
Hairstylist
Stuart Lyons
Casting
Thomas Goswell
Art Direction
Len Shilton
Sound Recordist
Basil Newall
Makeup Artist
Bill Constable
Assistant Art Director
Ian Scoones
Special Effects Assistant
Egil S. Woxholt
Underwater Camera
Terry Lens
Second Assistant Director
Len Harris
Additional Camera
Pamela Mann
Continuity
John Jordan
Dora Lloyd
Wardrobe Master
Jim Groom
Sound Editor
John Crome
Assistant Sound Editor
Harry Oakes
David Tomblin
Assistant Director
George Higgins
Still Photographer
James Needs
Supervising Editor
Assistant Editor
Ray Andrew
Clapper Loader
Les Bowie
Special Effects
William Hill
Production Manager
Teddy Mason
John Hollingsworth
Music Supervisor
Les Hammond