The “lively and engrossing” (The Wall Street Journal) story of how OSS spymaster Allen Dulles built an underground network determined to take down Hitler and destroy the Third Reich.

Agent 110 is Allen Dulles, a newly minted spy from an eminent family. From his townhouse in Bern, Switzerland, and in clandestine meetings in restaurants, back roads, and lovers’ bedrooms, Dulles met with and facilitated the plots of Germans during World War II who were trying to destroy the country’s leadership. Their underground network exposed Dulles to the political maneuverings of the Soviets, who were already competing for domination of Germany, and all of Europe, in the post-war period.

Scott Miller’s “absorbing and bracing” (The Seattle Times) Agent 110 explains how leaders of the German Underground wanted assurances from Germany’s enemies that they would treat the country humanely after the war. If President Roosevelt backed the resistance, they would overthrow Hitler and shorten the war. But Miller shows how Dulles’s negotiations fell short. Eventually he was placed in charge of the CIA in the 1950s, where he helped set the stage for US foreign policy. With his belief that the ends justified the means, Dulles had no qualms about consorting with Nazi leadership or working with resistance groups within other countries to topple governments.

Agent 110 is “a doozy of a dossier on Allen Dulles and his early days spying during World War II” (Kirkus Reviews). “Miller skillfully weaves a double narrative of Dulles’ machinations and those of the German resistance” (Booklist) to bring to life this exhilarating, and pivotal, period of world history—of desperate renegades in a dark and dangerous world where spies, idealists, and traitors match wits and blows to ensure their vision of a perfect future.