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.

Cast:Janette Scott, Oliver Reed, Sheila Burrell, Maurice Denham, Alexander Davion, Liliane Brousse,

Genre:Thriller, Horror,

country:United Kingdom,

Production:Hammer Film Productions, The Rank Organisation,