Besides just being an excellent story with well-developed characters, this story is full of dualities. For example, it displays the dark side and the light side of human nature. The reader "sees" that hope can be both a good thing and a bad thing, and a prison can be outside of the iron bars and high walls just as well as inside (behind) the bars and walls. The reader also sees that there is more than one kind of rehabilitation and redemption. This books is a true portrait of humanity, the human condition, and the (sometimes incorrect) labels that society places on an individual in regard to who is "good" and who is "bad." Even if you've seen the movie, this book is well worth your time.