I really enjoyed this book. It's the better part of 400 pages, and I read it in two days. I couldn't put it down.

The whole story is told from the protagonist's -- Zoey's -- perspective, so it's easy to identify with her and see her world as she does. Another thing this author seems very good at is painting the landscape around her. So often I find that authors try to define the surrounding situation, but I find that there's not enough for me to get a real sense of the place. Hart is very good at it. Throughout the book, I had very clear mental images of the hallways and its doors, and the various lays of the land. Best of all, the story is exciting. I looked forward to getting back to it each time I stopped reading.