That a criminal decides to turn into a new leaf and become a police officer is fine. Even though the nature vs. nurture debate continues , it is difficult to believe that a person who's been cold blooded, hardcore , severely brutal criminal till the age of 15-16, becomes a soft natured educated , monogamous person and not once any of his earlier traits surface. He doesn't even become a brutal police officer. The movie seemed a little forced , like there had to be a twist.