"Following her father's death, a teenage heiress moves in with her guardian uncle who is broke and schemes to murder his niece for her vast inheritance."
Jean Simmons
as Caroline Ruthyn
Katina Paxinou
as Madame de la Rougierre
Derrick De Marney
as Uncle Silas
Derek Bond
as Lord Richard Ilbury
Sophie Stewart
as Lady Monica Waring
Esmond Knight
as Dr. Bryerly
Marjorie Rhodes
as Mrs. Rusk
Guy Rolfe
as Sepulchre Hawkes
Reginald Tate
as Austin Ruthyn
Manning Whiley
as Dudley Ruthyn
John Laurie
as Giles
Frederick Burtwell
as Branston
George Curzon
as Sleigh
Patricia Glyn
as Mary Quince
O.B. Clarence
as Vicar
Frederick Ranalow
as Rigg
Robin Netscher
as Tom Hawkes
John Salew
as Grimstone
Patricia Dainton
as Guest at Ball (uncredited)
Charles Paton
Gordon Phillott
Ben Travers
Screenplay
Ralph Kemplen
Editor
Irene Howard
Casting
Laurence Irving
Production Design
Alan Rawsthorne
Music
Ralph Brinton
Art Direction
Sheridan Le Fanu
Novel
Elizabeth Haffenden
Costume Design
Producer
Jack Hicks
Associate Producer
John W. Gossage
Production Manager
Robert Huke
Camera Operator
Kenneth Heeley-Ray
Sound Editor
Henry Harris
Special Effects
Muir Mathieson
Conductor
Peter Bolton
Assistant Director
George Blackwell
John Cook
Sound Recordist
Desmond Dew
Josef Somlo
Robert Krasker
Director of Photography
Charles Frank
Director
Anthony Hearne
Second Assistant Director
Fred Ryan
Boom Operator