A rather mild horror movie; if not for a couple of sex scenes, it could easily have been a TV movie. Plot holes abound (one example: why would there be a secret passage from the 18th century leading from the upper floor of a house that was burned to the ground and a new building put ther 200 years later?), cardboard acting, characters doing things that anyone with an IQ bigger than their shoe size wouldn't do...
It's got a few fun moments, but overall it's a sub-par film that managed to get Roy Scheider because his bills were due. If you're looking for an extremely formulaic, predictable film that might provide a few laughs, it might be worth watching. If not, then this one's not for you.