I am glad I didn't quit this book during the less compelling 3rd and 4th chapters, because the ending, however unrealistic, was moving and the journey unique. At times, the more fanciful parts of the book jar with the dystopian setting, and I kept wanting a more scientific understanding of the marrow-stealing rationale. Yet I was charmed by the originality of the story and several of the characters. They are flawed and strange, disconnected yet loyal, strong but sometimes painfully naive. I wish it was longer, more detailed and written for adults, but it is a rare gem.