He was a dentist from the South believed to have gone west because of tuberculosis, a man who went on to become a gambler, a faro dealer, and one of the most feared (and fearless) gunfighters of his time - a close friend of Wyatt Earp and a key participant in the famous 1881 shootout at the OK Corral. But who was the real Doc Holliday? Drawing on 20 years of meticulous, primary-source research, Western historian Gary Roberts strips away the legends and reveals the truth about this enigmatic man, offering many new and surprising discoveries.