Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It grips you from the start that you can't put it down.

The story starts from the first page and holds you throughout. Its narration back and forth between the 2-main characters flows beautifully and reads almost like a conversation. Both girls are so different and it's nice to get the perspective from each one. My only criticism is that it seems she left the ending open for a sequel.