Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I've read better!

I found this book to be very disappointing! I almost put it down and didn't finish it at all, but read on just to find out who the killer was. I got VERY frustrated with the characters of this book, that each of them had seen Kristina's dead body in the snow and did not say a word to the police and just went on with their Thanksgiving vacation! I found that to be very unrealistic and from that point on the story went south for me.