Robert Knepper discusses the return of his role in 'Prison Break'

For four years on 'Prison Break?, Robert Knepper played the most despicable inmate on the show, Theodore Bagwell - better known as ?T-Bag?. The show is back - so is T-Bag, and in tonight?s premiere, T-Bag shares a piece of mail that makes him wonder whether someone who was thought dead is really alive. ?Prison Break? airs Tuesday night at 9:00pm - right here on FOX. On social: https://www.facebook.com/PrisonBreak https://twitter.com/PrisonBreak https://twitter.com/robert_knepper