A psychotic man schemes to drive his sister mad so that he can claim her inheritance, but a deadly game of cat-and-mouse begins when an imposter intervenes.
Janette Scott
as Eleanor Ashby
Oliver Reed
as Simon Ashby
Sheila Burrell
as Aunt Harriet
Maurice Denham
as John Kossett
Alexander Davion
as Tony Ashby
Liliane Brousse
as Françoise
Harold Lang
as RAF Type
Arnold Diamond
as Publican
John Bonney
as Keith Kossett
John Stuart
as Williams
Sydney Bromley
as Tramp (uncredited)
Laurie Leigh
as Woman #1 (uncredited)
