By the time he was killed in the jungles of Bolivia, where his body was displayed like a deposed Christ, Ernesto "Che" Guevara had become a synonym for revolution everywhere from Cuba to the barricades of Paris. This extraordinary biography peels aside the veil of the Guevara legend to reveal the charismatic, restless man behind it. Drawing on archival materials from three continents and on interviews with Guevara's family and associates, Castaneda...