Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Riveting...had trouble putting it down

I really enjoyed reading this book...the first half lets you learn so much about each character and after the story developed the second half forced me to stay up really late because I could not put it down. I was disappointed when this book was over because I just wanted more. I would highly recommend this book. I usually read true crime stories so this was one of the first fiction novels I have read in a while. It was wonderful!