Take these characters: a hardened criminal whose life is turned upside down when he meets a beautiful girl, the beautiful girl who receives a new lease of life due to the reformed killer, and a psychotic serial killer who stabs his victims and then sits next to them narrating the story of his life and telling them that he feels no happiness, just a strange sense of comfort.
Now make the serial killer turn the criminal's life upside down, and pit the killer and the criminal against each other. Imagine the thrill of the chase and the sheer adrenaline that the confrontation should....