Something is in search of human prey in the gang-ridden communities of Los Angeles . . . When the member of a notorious street gang is found decapitated and dismembered at the bottom of the LA River, it quickly becomes apparent something is amiss. Detective Daryl Garcia connects it with the murders of six other gang members killed the same way. It looks like the work of a serial killer, but the gang members don't think so. They believe the murders are the work of rival gang members. Someone has a dark desire of the most depraved fetish . . . Detective Garcia becomes determined to find the killer at any cost. Together with Rachael Pearce, a journalist he falls in love with, he searches for the killer through the gang underground and the world of prostitution and drugs. And as suspect after suspect is released with no solid evidence to connect them to the crimes, the search for the killer becomes more urgent as the gang infested areas of the city reach a boiling point to the brink of rioting. In a community of gang members-who are killers themselves-how does Detective Garcia find the most monstrous killer he has ever encountered? Madness wears many faces . . .