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