Have to admit that I wasn't expecting a lot from this book, what with it being the author's first horror novel, I assumed that it would be full of clichés but I'm really glad I went ahead as it is much more than that.
There are clichés of course as it is almost impossible to write anything in a particular genre without resorting to at least some clichés, but oddly most of the obvious ones are not from the horror aspect, but the initial chapters that come across very much like a standard cop-chasing-serial-killer and in particular with the descriptions of the hero as a loner, maverick, wisecracking cop, but this is soon forgotten as he goes through the many twists and turns of the plot, that make him both nice and horrible, depending who he's talking to. Or in other words, just like a real person.
Other characters are mostly nicely rounded out, for the most part although there are a couple of exception and one that goes through something of a personality transplant at different times in the book, that could have done with a bit of cleaning up.
That and a few other minor errors mentioned by other reviewers aside, the plot is really rather good even if it does appear to borrow from several source such as 11970's horror movies, and a certain "I see dead people" film but that doesn't matter as this mix all pretty much works, and works really well.
In fact - and this isn't something I would say about a lot of books - I would even dare to suggest that there could be a sequel to be had, with the same characters (well those that made it to the end of the book, obviously).