The story of Lance Armstrong, the cyclist who had overcome life-threatening cancer and come back to win the Tour de France, inspired millions around the world. But as journalist David Walsh suspected from the very beginning: it was all built on a lie. In search for the truth, he conducted a 13-year investigation into the Texan cyclist that had Armstrong dubbing him a 'troll' and questioning his ethics. But in October 2012, Armstrong was stripped of his titles and forced to admit in an interview with Oprah that he had, after all, been doping and that his seven Tour victories were little more than his seven deadly sins.