Paranoaic.
After the deaths of their parents in an accident and the supposed cliff top suicide of their brother Tony, Simon(Oliver Reed) and his neurotic sister Eleanor(janette scott) are brought up by their aunt.
But Simon is totally insane and plans to kill his sister to get her share of the inheritance. However things take a dramatic turn when a chap turns up claiming to be the dead brother Tony.
A very good psycho thriller indeed from the early days of Hammer before they went all Frankenstein and Dracula. freddie Francis does a brilliant job here directing this top class suspense film with plenty of twists and turns to keep you guessing throughout.
the acting is top notch too, with Reed in particular in fine form as the violent drunk on the brink of madness, and probably didn't need to do much acting to play a drunk.
Janette scott also does a nice turn as Eleanor and i'm surprised that she didn't turn up in a few more hammer films.
Yes, i certainly recommend this excellent thriller. and give it 81 out of 100.