When gold medalist Jim Thorpe was dubbed "the world's greatest athlete" at the 1912 Olympics, it wasn't hype. Football, baseball, lacrosse, even ballroom dancing ... Thorpe was the world's first multi-sport superstar. But when the Native American icon had his Olympic medals unjustly stripped from him, he faced his toughest hurdle yet. Mo talks to biographer David Maraniss about Thorpe's meteoric rise from Oklahoma Indian territory to global celebrity, and his surprising third act in Hollywood. Plus an interview with granddaughter Anita Thorpe. And Mo visits Jim Thorpe, Pennsylvania, a town with a history as startling as the man himself.

NEW YORK - 1915. Jim Thorpe, Olympic star and outfielder for the New York Giants, takes some ground balls at the Polo Grounds before a game in 1915. (Photo by Mark Rucker/Transcendental Graphics, Getty Images)
American athlete Jim Thorpe (1888 - 1953) at an athletics meeting at the Parc Pommery in Reims, France, 23rd July 1912. Thorpe is competing in the 110 yards Hurdles. BRA-75991. (Photo by Branger/Roger Viollet via Getty Images)