Sgt. Bowe Bergdahl, 28, was captured by the Taliban in 2009 and held for five years before his release last summer, amid controversy over a prisoner swap to secure his safety. Much of what we know about Bergdahl has come from official reports, remarks by the president, and statements from his family, as well as from a handful of Taliban videos of him in captivity. With Serial's second season, creator Sarah Koenig says listeners will get a better look at the man behind the story.