Waltz of Shadows

When Bill and his friends accidentally witness a homicide by two hitmen known only as Fat Boy and Cobra Man, everyone but Bill is slaughtered. After escaping by the skin of his teeth, Bill runs to his Uncle Hank, who reluctantly gets involved, and together, they begin a clandestine takedown of Fat Boy and Cobra Man that leads them to something much darker, much more unspeakable than simple murder or revenge. Waltz of Shadows, a novel not for the feint of heart, is Lansdale at his darkest.