Reading this along with my 7th grade son. We loved the first two books in the series - lots of suspense and surprises. This one was not about the main character of the series. We expected more of Luke's story, but got a whole book about this other character, which wasn't what we expected. Because we were waiting to hear about Luke, the first few chapters dragged. When we finally realized this was not going to be about Luke, we enjoyed this side story more. Very confusing though. This character was arrested because she worked for the Population Police, so they used the false charge that she was a Shadow Child to remove her from the school But in this book, she is a Shadow Child and hadn't done anything wrong and was perhaps set up. Near the end of the book and still confused. We are just going to get through it so we can move on to the next book and learn what happens to Luke.