Instruct: Classify Amazon reviews into positive or negative sentiment
Query: big disappointment

Once upon a time, I was a HUGE fan of Cook's medical thrillers. But how thrilling can a book be when 50 pages in you can figure out every detail of who dunnit and why? The characterizations in this story are ultra-thin stereotypes as well. Formula writing doesn't work. Mr. Cook needs to take a breather and write something completely different, as have James Patterson and John Grisham. Heck...*I* could have written this book, it's so predictable!