His fellow cops say he's trigger-happy. His ex-wife says he's unstable. His new lover says he's obsessive. His superiors say he's off the case and under investigation. His world is coming apart ... He's a cop on the trail of a killer the law can't touch. He has his own brand of justice. He's got nothing to lose. Except his life. When you've been pushed to the edge, there's no way back ...