I knew the basic premise, of a 5 year old boy's view of his captive life in a small room, and that was all. Once I started, I found the book very hard to put down. Jack's view of his world is so well done, and as others have said, I now miss his thoughts and his voice.
So go on, stop reading the reviews, and move on to the book!
For those who would like to know a little more...
This isn't however, enough to distract from a fascinating book. Despite the subject matter, it's actually a warm, uplifting story. You can't help but fall in love with them both, and it's a story that won't leave me for some time.