Gilder Lehrman Military History Prize Finalist * A New Yorker "Best Books of the Year" selection “Need to Know is the most thorough and detailed history available on the origins of U.S. intelligence.” —Michael Morell, former Deputy Director and Acting Director, CIA Historian and former CIA officer Nicholas Reynolds, the New York Times bestselling author of Writer, Sailor, Soldier, Spy, uncovers the definitive history of American intelligence during World War II, illuminating its key role in securing victory and its astonishing growth from practically nothing at the start of the...