Instruct: Classify Amazon reviews into positive or negative sentiment
Query: a really different mystery that will have you hooked

I read this book when it first came out and have since read all of John's books. I thought this book was fabulous and it got me really interested in collecting first editions. The characters are really well written and it is one of those few books that you rush through because you can't wait to find out what will happen next but then you really try to stretch it out because you just do not want it to end. This is a first class mystery!