This book is a nonfiction book written by Patricia Conwell, who is most notable for her Kay Scarpetta novels. I picked this book up because I was in the middle of reading the Scarpetta novels. I figured it was worth a read since I am also interested in true crime. I am not convinced that her evidence that she presented in this book would hold up in any courtroom, but it was a fairly entertaining read. I left this book feeling completely unconvinced that Jack the Ripper was Walter Sickert, but it was an interested theory. I don't feel like I wasted my time reading this like a lot of the other reviews that I read did, nor did I think this was the most amazing piece of true crime I have ever read like some of the other reviews. I am certainly one of the middle of the pack readers of this book. I would just say, read at your own risk and take everything with a grain of salt.