Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Reference Book

I bought this book for a criminology class and still use it after graduating college. It is an interesting read cover to cover, but I use it to get more information after watching many real crime shows that are now on TV.The book has the basic facts regarding the killers and should not be looked at for all the details. It certainly gives you enough information for you to decide if you wish to study a killer more in depth.