Lots of people, doing foolish things.
Rule Number One - if the house is "haunted" and has a notorious history, why go into it at all?
The film does have an interesting cast - Tess Harper and Candy Clark are the standouts.
As the psychic who is trying to get a handle on the house, Robert Joy gets a most unpleasant death.
(Mr. Joy had a knockout scene in Woody Allen's 1987 film, "Radio Days".)