24, Mykelti Williamson 24, Mykelti Williamson

Not only does Jack Bauer (Kiefer Sutherland) have to save the world, once again, but he has to do it with the help of a new CTU and an even newer boss, Brian Hastings (Mykelti Williamson). TVGuide.com hit the set of 24 to find out about the big threat this season, how Hastings interacts with Chloe (Mary Lynn Rajskub) and Jack and if he'll live up to former CTU head Bill Buchanan (James Morrison).

24: Jack Bauer will survive to the end of the series

"This is a different guy," Williamson says about being compared to Buchanan. "He's here for a different reason and he's not really sure he should be here."

Check out the video from the 24 set: