The tuberculosis-stricken dentist is about to become a legend. In Part 2 of our Doc Holliday saga, Ben and Andrew ride into Tombstone—where Doc teams up with the Earp brothers, drinks like a dying man, and walks into the most famous 30 seconds in the history of the Wild West. We’ll break down the myth and the mayhem of the O.K. Corral, trace Doc’s final years on the run, and separate fact from frontier fiction.