When Lance Armstrong was found to have perpetrated one of the biggest ‘doping’ scandals in the history of professional cycling in 2013, it seemed as though the phrase ‘How the mighty have fallen’ could have been coined just for him. Revered as one of the greatest sportsmen of his generation, Armstrong had survived cancer and gone on to, seemingly, become a world champion several times over. However, while millions worshipped him as a hero, Irish sports journalist David Walsh remained suspicious, and that is the story told in The Program.