I have been trying (and have failed) to find the name of a 70's British (I think) horror film.
This is what I remember: There is an old house, a husband and wife (Jessica, I think), The poor woman is being driven mad by seeing things, e.g body in the pond, face at the window.
But the best and most horrific part is this: The woman goes to the bathroom (near the end of the film), only to discover a drowned man in the bath, the drowned man then slowly gets up out of the bath water, this renders the woman giddy and she faints and bangs her head... the man then removes creepy blank contact lenses from his eyes, to reveal it was a bluff to kill or drive her mad.
It is not the film "Let's Scare Jessica To Death". That is some American rubbish.