"24's" SEASON FIVE CLOCK ADJUSTED WITH FOUR-HOUR, TWO-NIGHT PREMIERE MOVING TO SUNDAY, JANUARY 15, AND MONDAY, JANUARY 16, ON FOX

The clock has already started ticking for the thrilling and unpredictable fifth season of 24, which will now begin one week later than previously announced with a four-hour, two-night season premiere Sunday, Jan. 15 and Monday, Jan. 16 (8:00-10:00 PM ET/PT) on FOX. The second hour on Monday, Jan. 16 (9:00-10:00 PM ET/PT) will be the series' 100th episode.

The fifth hour of 24 will air in the show's regular time period on Monday, Jan. 23 (9:00-10:00 PM ET/PT), and the intense series will then unfold on a weekly basis without repeats or preemptions, all the way through the heart-stopping season finale.

Season five picks up 18 months after the exciting conclusion of season four, as national security is brutally breached. A presumably dead Jack Bauer (Kiefer Sutherland) is actually living a new life with Diane (Connie Britton) and her son Derek (Brady Corbet). A shaky President Logan (Gregory Itzin) is running the nation, while composed Bill Buchanan (James Morrison) commands CTU alongside key operatives Curtis Manning (Roger Cross), Edgar Stiles (Louis Lombardi) and Chloe O'Brian (Mary Lynn Rajskub). Also featured in season five will be Emmy Award-winning actress Jean Smart as First Lady Martha Logan. In addition, Tony Almeida (Carlos Bernard) and Audrey Raines (Kim Raver) return, while Lynn McGill (Sean Astin) joins CTU.

24, created by Joel Surnow and Robert Cochran, is a production of Real Time Productions and Imagine Television in association with 20th Century Fox Television. Brian Grazer, Joel Surnow, Robert Cochran, Howard Gordon and Evan Katz are the executive producers. Kiefer Sutherland is a co-executive producer.