Sin on AllMovie

It's often said that in order to catch a killer, you must first truly understand the motivations that drive their madness. The old saying is true, and retired homicide detective Eddie Burns (Ving Rhames) is about go to some of the darkest depths imaginable in a desperate bid to rescue his sister from a monstrous maniac (Gary Oldman) whose relentless sadism knows no bounds. Slowly drawn into the dark underworld of drugs and pornography, detective Burns soon learns that the bond he shares with the maniac he stalks runs stronger and deeper than he ever imagined. When the two men come face to face, their worlds collide in a furious blaze of lead and hellfire that threatens to consume their very souls.