After 22 hellacious hours underscored by the loss of innocent lives, the evil betrayal of Tony Almeida, the First Gentleman's kidnapping and shooting, a vicious siege on the White House, heroic sacrifices, a conspiracy, exposure to a lethal pathogen and an unthinkable bio-weapon attack, Jack Bauer reaches an emotional breaking point as this remarkable day reaches its climactic conclusion. Guest Cast: Jon Voight as Jonas Hodges; Sprague Grayden as Olivia Taylor; Elisha Cuthbert as Kim Bauer; Glenn Morshower as Aaron Pierce; Will Patton as Alan Wilson; Leland Orser as Martin Collier; Ryan Cutrona as Admiral Smith; Frank John Hughes as Tim Woods; Amy Price-Francis as Cara Bowden; Ravi Kapoor as Muhtadi Gohar.8 p.m. Monday. Fox.