Ellroy has called this book a weak comparison to Harris' "Red Dragon", but I disagree. Then again, I wasn't impressed with "Red Dragon" because the main character, Will Graham, was too wrapped up in his own problems to throw himself into the mind of a serial killer. I was impressed with Ellroy's main character, Lloyd Hopkins, being a truly awful person but a great cop who disregards his personal life, feels a kinship for a killer and breaks all the rules to do what he knows he must to hunt down a monster. He really is crazy, whereas Will Graham just worried that he was going crazy. The story has the hard edge you'd expect from Ellroy's characters and crimes. This book was the basis for James Woods' 1987 movie "Cop," which has the story's grittiness down pat. Four stars - not five - because "LA Confidential" and "Black Dahlia" set a very high standard for Ellroy.