Among the Impostors continues the tale of Luke, an illegal third child, as he gains a new identity and attends boarding school as Lee Grant. It's an interesting speculative fiction book about what would happen if it became illegal to have more than two children. 
 I enjoyed it, I really did, but I don't think I'll continue reading the series. For me, this is simply because of the target age group, which seems like older elementary school students. Things were a little more black and white, a little less nuanced than I would have liked from a speculative fiction work, but I also have to realize: this book isn't for me. It's for younger kids, to get them introduced to the concept of this type of fiction that's a little darker than they might normally read. And that's something I did really appreciate about this series. It has a dark concept, and it sticks to it. In the first book, Luke's friend and a bunch of other shadow children are actually killed. (view spoiler)[In this one, a double agent infiltrates the school and tries to betray four Shadow Children (and Luke) to the Population Police. When that child fails, he is instead arrested by the Population Police, and the other characters are fully aware that he will be tortured and killed.(view spoiler)[ Haddix doesn't chicken out when it comes to being realistic to the rules of the world she has created. If I was a kid, I would have absolutely loved this. And I wish I had found it sooner. But I didn't, and now I have books series like Everlost (The Skinjacker Trilogy) and Unwind to occupy my time. That being said, I would still definitely recommend this book to some of the younger readers in my life, as an introduction to the whole speculative-fiction novels and to see if they would enjoy the aforementioned series. 
 So, in conclusion, an entertaining book that I wish I had found when I was younger. But, this book simply isn't aimed at me, and I'm fine with that. (hide spoiler)] (hide spoiler)]