From what I understand John Douglas is one of the first FBI behavior profilers for murderers. He is one of the reasons we have the TV shows like Criminal Minds, Psych, The Profiler etc. Like the rest of the world, I am fascinated with behavior and the accompany reasons of what it takes for "normal" people to get involved in tragic events such as murder. There but for the grace of God go most of us, pray hard that most of us never have to to be involved in something so ugly. This book analyzes some of the most puzzling unsolved cases in history: John Benet Ramsey, Jack the Ripper, Lindbergh Baby etc. Not only am I fascinated with the behavior, but I love the forensic science approach, too. My type of book, well written (not too geeky, compassionate on all sides.