“A fantastic book, one of the very finest accounts of wartime spookery” (The Wall Street Journal)—a spellbinding adventure story of four secret OSS agents who would all later lead the CIA and their daring espionage and sabotage in wartime Europe from the author of the bestselling Wild Bill Donavan.They are the most famous and controversial directors the CIA has ever had—Allen Dulles, Richard Helms, William Colby, and William Casey. Before each of these four men became their country’s top spymaster, they fought in World War II as secret warriors for Wild Bill Donovan’s Office of Strategic Services.