In this ninth book of the Hammer Spade series Hammer and his friends are assigned to infiltrate a shadowy group who call themselves The Four Horsemen of the Apocalypse. Their mission is nothing less than the destruction of Western Civilization. In volume one, Michael Clover infiltrates the Four Horsemen leadership council, Jack Kane and Clare Davis are assigned to the Black Horse of Famine group whose mission is to reduce the world¿s food supply. Dave Quigley and Jim Travis are sent to Algeria on a mission by Red Horse of War group, whose aim is to foment armed conflict. In volume two, Tim Whealton and Jerrel Neuhaus are dispatched to Papua, New Guinea where Willie Wanderer leads them to a plant that produces the world¿s most deadly natural poison. Hammer Spade and Shidee Callaway are sent to Tibet to learn from Tibetan wise man, Annyl Slohcin, how to destroy the souls of men. Then they all meet in Casablanca, Morocco where Michial Clover, aka Lord Phillip Norwich, has a surprise waiting for everybody.