It should be obvious to anyone who has paid any attention to horror stories--whether written or filmed--that horror is a good vehicle for religious symbolism (or, perhaps, that religion is a good vehicle for horror). Indeed, the central thesis of this book is that religion underlies more of the horror genre than we often give it credit for. The author builds that case through an extensive survey of the use of religious symbolism (sometimes more overt than others) in both better- and lesser-known horror films.
The reader interested in the intersection between religion and horror would do well to add this to his or her library. However, the reader should also be forewarned that the author's treatment of his subject is rather dense. He spends so much time documenting the evidence for his thesis that he occasionally forgets to remind the reader where his argument is going. The result is a book that feels more like disconnected documentary explorations of religious iconography in the horror genre than a single coherent argument.
Further, much of the information the author presents will come as no particular surprise to anyone. For example, he spends quite a few pages discussing the critical and popular response to classic films like The Exorcist--a fascinating tale, to be sure, but one likely familiar to students of both horror and religion. That's not to say the author is wrong to include such case studies. They are absolutely relevant to his point. But readers looking for new information will occasionally feel like the book is telling them--however eloquently--something they already know.
On the other hand, when the author does break some new ground, it's fascinating ground indeed. The astute reader will learn not only of a few new films to watch and a few interesting points of theological argument, but indeed, of some novel connections between even familiar films and religious thought. Are all of the arguments convincing? Far from it, but they're something perhaps more important when it comes to artistic criticism: they're interesting.
While the book doesn't quite go far enough into explaining what aspects of the psychology of religion *really* make it so suitable to exploration (or perhaps exploitation) in the horror genre, the book does an excellent job of at least laying out what we already know of the psychology of religion within the genre's context. The end result is a book that's fascinating to people interested in both horror and religion, and perhaps even those interested only in one or the other but curious about why they seem to have such a connection.