Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Disappointment!

I am an avid reader of Robin Cook's novels. They are the type that you do not want to "let go". Abduction, however, is a departure from his medical thrillers and a very poor one at that. If you have never read a book by Robin Cook, do not start with this one! Any of his other books is much better. If you have read some of his books, be prepared for a disappointment.