Nick Sax is a corrupt, intoxicated ex-cop turned hitman, adrift in a stinking twilight world of casual murder, souless sex, eczema, and betrayal. With a hit gone wrong, a bullet in his side, the cops and the mob on his tail, and a monstrous child-killer in a Santa suit on the loose, Nick and his world will be changed forever the Christmas--by a tiny blue horse called Happy.