I started reading this after the news broke that Peter Jackson is going to make a movie based on this book. I can only imagine how he's going to represent this very different world. Think Hunger Games, but the cities are in a city eat city fight, and have been for hundreds of years. Mix in a bit of The Maze, and a smidge of The Passage, and whip it all together, and you have a compelling story with some great young protagonists - strong girls, and strong boys. Evil mayors (aren't they all?), and other people whose loyalty will be tested. I really enjoyed the premise, and the tension which went up and down like a seesaw. I can recommend this book for lovers of dystopian fiction, and YA fiction.