mr. everything." scholar, class president, the guy with the cool friends, hannah valentine opened up her parents' summerhouse to charlie and his other teenaged pals. >> he was always happy and energetic. >> the guy that tells jokes? >> everybody knows him. he'll like walk in. the room lights up, he starts telling a funny story. >> so you'd think charlie tan was another ivy league overachiever poised for takeoff and great things to come, but that's not his story. this is about the charlie tan, keeper of secrets, and quite possibly something much worse. but before all that, charlie was as deserving a kid as ever got an ivy league acceptance letter. >> he was really excited. when he got admitted, really awesome. >> ivy league. >> yeah, he was super excited, super happy. >> so in the fall of 2013 charlie tan left his parents' home near rochester, new york, and drove the few hours to cornell. his exciting new chapter in a life already filled with early achievements. he pledged a frat. he wasn't big enough for the varsity football team, so at 165 pounds he was directed forward what they call a sprint football team