A major addition to the history of the Civil War, Lincoln’s Spies is a riveting account of the secret battles waged by Union agents to save a nation. Filled with espionage, sabotage, and intrigue, it is also a striking portrait of a shrewd president who valued what his operatives uncovered. Veteran journalist Douglas Waller, who has written ground-breaking intelligence histories, turns his sights on the shadow war of four secret agents for the North—three men and one woman. From the tense days before Abraham Lincoln’s inauguration in 1861 to the surrender at Appomattox four years later, Waller delivers a fast-paced narrative of the heroes—and scoundrels—who informed Lincoln’s generals on the enemy positions for crucial battles and busted up clandestine Rebel networks. Famed detective Allan Pinkerton mounted a successful covert operation to slip Lincoln through Baltimore before his inauguration to foil an assassination attempt. But he failed as General George McClellan’s spymaster, delivering faulty intelligence reports that overestimated Confederate strength. George Sharpe, an erudite New York lawyer, succeeded Pinkerton as spymaster for the Union’s Army of the Potomac. Recruiting skilled operatives, some of whom dressed in Rebel uniforms, Sharpe ran highly successful intelligence operations that outpaced anything the enemy could field. Elizabeth Van Lew, a Virginia heiress who hated slavery and disapproved of secession, was one of Sharpe’s most successful agents.