Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Truthful...Case Closed!

Oh, please. I detest armchair critics, amateurs who purport to know more than the author of a well researched, and well written book. Ignore such wannabes, and read this book. Ms. Cornwell's expert, investigative, and convincing expose on Mr. Ripper, is one of THE MOST exhaustive of the many books on the subject. The problem is, people have such entrenched notions, and narrow minds when it comes to new information that might possibly render their "knowledge" obsolete. So, they write negative reviews like the ones above. They are wrong. Yes, this book may challenge every preconceived idea you have had about the killer, but truth doesn't really ask anyone's opinion. It is what it is, and this book is worth considering truthful. A job well done, Ms. Cornwell. Jack the Ripper would be proud.