I enjoyed this book enough that I'm interested in reading the next in the series. It's original and well written. Very dark at times, this is not something for anyone looking for a fluffy YA read. My only real issue was with the adults, especially Zellie's selfish mother. I wanted to shake some sense in to her. Clearly she had read from the 'How To Damage Your Child's Emotional Well Being' handbook. I read this on the train and actually spoke out loud at one point because I was so irritated. Worth a read.