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
Oliver Reed
Sheila Burrell
Maurice Denham
Alexander Davion
Liliane Brousse
Harold Lang
Arnold Diamond
John Bonney
John Stuart
Sydney Bromley
Laurie Leigh
Marianne Stone
