VIDEO: Has Prison Break's Mahone Gone Very Bad?

William Fichtner previews what's ahead for Prison Break's Season 4, premiering Monday, Sept. 1, at 8 pm/ET — including a possible reversal of allegiances for disgraced FBI agent Mahone. Plus: Guess who's resurfacing in the season premiere? (Having since seen the first episode, I can now tell you it's a pivotal return.) — Matt MitovichMore Prison Break Previews:• The cast asks their burning questions about the new season• Jodi Lyn O'Keefe reveals Gretchen's shocking romance• Wade Williams: Will Bellick escape the Sona prison?• Robert Knepper teases T-Bag's plan for the "bird book"

TV GuideNews July 21, 2008 at 12:47 p.m. PT