and only the best need apply, students like charlie tan. he was so kind, his classmate featured him in a video, random acts of kindness. giving gifts to complete strangers. >> not just a great kid but the greatest of great kids. >> charlie was the son of chinese immigrants who became "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