Season 5

Season 5 debuted in the United States on Monday, January 16, 2006 on Fox, and debuted in the United Kingdom on Sunday, February 12, 2006 on Sky One.

Summary
Eighteen months after faking his death, Jack Bauer is living under the alias Frank Flynn and renting a room from a single mother and her son. Soon after Former President David Palmer is assassinated, Jack gets a frantic call for help from Chloe O'Brian and he realizes that the four people who know he is still alive are being targeted. Jack returns to CTU Los Angeles to figure out who is really behind the assassination of David Palmer, and uncovers a plot involving deadly nerve gas and people inside President Logan's administration. As Jack searches for the people involved and tries to stop the nerve gas from being released, he discovers that the conspiracy goes higher than anyone could have ever imagined.

Main Cast

 * Kiefer Sutherland as Jack Bauer
 * Kim Raver as Audrey Raines
 * Mary Lynn Rajskub as Chloe O'Brian
 * Carlos Bernard as Tony Almeida
 * Gregory Itzin as President Charles Logan
 * James Morrison as Bill Buchanan
 * Roger Cross as Curtis Manning
 * Louis Lombardi as Edgar Stiles
 * and Jean Smart as First Lady Martha Logan