Four years ago, Jack was a fugitive from justice. Now an exile, he nevertheless is willing to risk his life and freedom to avert yet another global disaster. Tracking Jack are CIA head Steve Navarro; CIA agent Kate Morgan, who is both resourceful and ruthless; Jordan Reed, a smart and sophisticated CIA computer tech; and Erik Ritter, a sharp, strong and arrogant field operative. Calling the shots is James Heller, now President of the United States. Heller is flanked by his Chief of Staff Mark Boudreau, who is married to Heller's daughter - Jack's former flame, Audrey. Meanwhile, a hardened Chloe O'Brian, Bauer's CTU confidante, is now working underground with high-profile hacker Adrian Cross.