Hellraiser is a horror franchise that consists of ten films, a series of books, various comic books, and additional merchandise and media. The franchise is based on the novella The Hellbound Heart by English author Clive Barker, who would go on to write and direct the adaptation of his story, titled Hellraiser. The films, as well as the comic book series, continually feature the Cenobite Pinhead. (Wikipedia)
I suspect in a haunted house movie it is the ghosts and house that are the real stars. It is a shame that they had to include this plot and these characters.