I was looking for a horror story, but this book is slightly creepy at best. The description was good and the reviews looked promising - one called it a "horrifying, scary-as-hell tearjerker" and this book is not even close to being that. It's strange, and slightly creepy, but overall, I found it kind of dull. It isn't a page-turner, it didn't keep me on the edge of my seat, and it seemed to follow generic horror book/movie formulas -- it even got fairly predictable.
The beginning is scary, yes, but once you're into the scary situation it doesn't really get any worse. The middle is repetitive and full of bloodshed that mostly seems gratuitous. The ending is inconclusive (which I hate) and you never find out if what's happening is real or the delusions of some cultists with a lot of coincidence thrown in. There is one twist about 2/3 of the way through that I wasn't expecting, but while unfortunate for the character concerned, it doesn't really seem to add to the plot in any way.