One of a series of novels (Have a Change of Scene, So What Happens to Me?, Goldfish Have No Hiding Place) in which JHC centers the action around a gullible beyond belief protagonist. Here, that person is Clay Burden. They all seem to have been written with a purpose, however, intentionally experimenting with the overly credulous hero. As with the others mentioned above, you see so clearly what Clay and his buddies seem too blind to comprehend--that the women they've fallen for are using them and have serious psychological flaws or diseases. No matter. They blunder on.
In the case of Believe This . . . You'll Believe Anything, however, even realizing Clay is walking into a trap has no effect on Chase's ultimate and, yes, shocking ending. Without spoiling things, all the pieces come together as you think they will, but the revelation is still brutal and even mystifying. Once again, there is no violence until some "off screen" yells are intimated right at the very end. This was more of a horror novel than a crime or mystery thriller.