This is one of the worst books I have ever read about Jack the Ripper and I have read many. He makes so many mistakes with basic facts that I can't believe he knows what the word investigation means. I am sure he fancies himself an expert on the subject, but this book proves two things:1. A person with a little knowledge can do a lot of dmamage. Please do not make this the first book you read about Jack the Ripper!2. Anyone with enough money can get anything published. I strongly suspect this is why this book exists. Any real publisher would have thrown it in the bin where it belongs.