I bought this book because I saw the author on "Oprah" and I found her to be very moving and ... she spoke very well to the "average person." I figured that as a parent and as someone who works in a helping profession, I could probably afford to get educated in this. I thought, rightly-so, that I probably have encountered a sexual predator either in the performance of my professional duties or just in the grocery store; and "would I know?" if I met such a person? The answers to those questions bothered me enough that I bought the book.What a hard read. Let me first say that this book is graphic, including descriptions of sexual assaults. It also details the "inner workings," logic, and "expectation of entitlement" of some predators. I found myself pretty compelled to keep reading, in part fascinated by the psychological aspects of these predators and also that it was explaining something that was so foreign to me and I felt I couldn't afford to not be informed. I found a lot of useful information that was clearly written for parents.Eventually I did run into someone, at the grocery store, who ... just fit the profile very well. And sure enough, this person did some of the very things described in this book and attempted (didn't get very far at all) to engage our young son in conversation. I knew exactly how to react, and ... literally, this guy ran. Knowing now how someone like this probably thinks, helped in this encounter.I bought 3 more copies and gave them as gifts.