Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great insight into the criminal mind

One of Stephen Hunter's best books. Hunter creates a terrifying super-criminal. This guy is scary because, through Hunter's writing, he becomes real. Unusually for books of the genre, we get inside the mind of this murderer and understand his amorality and logic behind his actions. The other characters in the book are very well drawn as well.This is as real as you would want it to get.