 All of William Slater's books are written for young readers, but there's some of the best damn science fiction you will ever read. House of Stairs is about a 16-year-old orphan boy who wakes up one morning, finds himself in this world of infinite staircases. The story of how this group of kids discover why they're in there and what they choose to do about it is a story that you will never forget. If I had to describe this book in one sentence, it would be Lord of the Flies for sixth graders. Get this book.