An introspective private investigator with a wry sense of the human condition, Maddock has always managed to stay above the fray. But when the mob killed his best friend, Maddock waded into a world of violence. Preparing to close his detective agency and flee to a new life, he accepts one final job. The Six-Chambered Heart looks into his troubled heart as he plays a deadly game of cat and mouse with a serial killer and a corrupt cop.