"Delusion" is a slasher film...and I rarely choose this sort of movie to watch. It's not totally mindless, keeps you guessing and isn't altogether awful!
When the film begins, Meredith (Patricia Pearcy) arrives at a mansion to become the new nurse for an elderly invalid (Joseph Cotten). The job seems pretty easy and she fits in well. However, when the old man's weird grandson arrives, things start dying...starting with the family dog but not stopping there! Who's behind all this...and are the confusing plot elements going to make sense by the end of the picture?
The film suffers a bit from Pearcy's zombie-like performance during much of the film. It also occasionally makes little sense...such as why the police aren't more alarmed with all these deaths. But it does offer plenty of false leads, dead ends and twists and so if you like this sort of film, it will fit the bill. I respect what they did with this picture, though I wasn't especially thrilled with seeing it.