Laurell K. Hamilton said this quote

Grimes believed in what he did, with no doubts. Though he was older than me by over a decade, I suddenly felt old. Some things mark your soul, not in years but in blood and pain and selling off parts of yourself to get the bad guys, until you finally look in the mirror and aren’t sure which side you’re on anymore. There comes a point when having a badge doesn’t make you the good guy, it just makes you one of the guys. I needed to be one of the good guys, or what the hell was I doing?