In this eighth 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 of two volumes, Michael Clover infiltrates the Four Horsemen leadership council, Jack Kane, 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.