What was it about Bob Marley that made him so popular in a world dominated by rock 'n' roll? How is it that he not only has remained the single most successful reggae artist ever, but also has become a shining beacon of radicalism and peace to generation after generation of fans?

Chris Salewicz, the bestselling author of "Redemption Song," the classic biography of Joe Strummer, interviewed Marley in Jamaica in 1979. Now, for the first time, in this thorough, detailed account of Marley's life and the world in which he grew up, Salewicz illuminates everything from the Rastafari religion and the musical scene in Jamaica to the spirit of the man himself. Interviews with dozens of people who knew Marley and have never spoken before are woven through the narrative as Salewicz seeks to explain why Marley has become such an enigmatic and heroic figure, loved by millions all over the world.