Thank you to NetGalley for the Advanced Reader’s Copy. I did not know what to expect when I first started reading this book, but it surpassed all of my expectations! This book is well researched and organized. The science and psychology behind each case was enlightening as well. It is a good read and truly fascinating look at serial killers. However, it is not for the faint of heart. Those who read this book should have a strong stomach because some of the scenes described in this book are truly horrific, to say the least, but its to be expected with a book about serial killers. This book even gives you the background of each serial killer, which includes their childhoods and their young adult lives. I recommend this book to anyone who likes reading about true crime.