Dry and unengaging writing style. The book felt like a hoax the whole time I was reading it. Every supernatural trope was thrown into the book, and the real story seems to be that of a couple who's marriage and financial stability are under duress making up a bunch of shit to externalize those problems. The most interesting part of this book was (similar to The Exorcist) the culture of the 70's that was so open to and legitimizing of "paranormal psychology".