"The Fall of Lance Armstrong" talks to Travis Tygart of USADA about the doping allegations made against the former Tour de France winner. "Messi" interviews Lionel Messi the star of Barcelona's football team. "Alone on the Wall" rebroadcasts and updates a classic 60 Minutes segment on climber Alex Honnold as he scales a rock wall using his bare hands and interviews him in a follow-up.