In this third novel following the espionage exploits of war hero Richard Hannay, the successful brigadier general is recalled from active service on the Western Front for another round in the spy game. His mission: infiltrating an antiwar league to bring down a network of German spies. Reluctantly posing as a pacifist, Hannay takes up his old identity as a mining engineer from South Africa to roam the country incognito in search of the deadly agents. His opponent is Morton Ivery, the bland master of disguise, who seeks to outwit Hannay as he and his agents are pursued through England, Scotland, France, and Switzerland. Once again, Hannay takes readers along with him for the twists and turns of espionage during the turbulent years of World War I.