Day 1: 5:00pm-6:00pm

Summary
Kim Bauer gets involved in a sticky situation when Dan's brother shows up at Rick Allen's house. David and Sherry argue about the evidence Keith gathered on Carl Webb. Jack Bauer tries to pose as Alexis Drazen but an agent with a grudge agains Jack causes problems while Teri Bauer returns to the Bauer household with Dr. Phil Parslow.

Episode Guide
''Right now, terrorists are plotting to assassinate a presidential candidate, my wife and daughter have been targeted, and people that I work with may be involved in both. I'm Federal Agent Jack Bauer, and today is the longest day of my life.''

The following takes place between 5:00pm and 6:00pm on the day of the California Presidental Primary.

Starring

 * Kiefer Sutherland as Jack Bauer
 * Leslie Hope as Teri Bauer
 * Sarah Clarke as Nina Myers
 * Elisha Cuthbert as Kimberly Bauer
 * and Dennis Haysbert as David Palmer

Special Guest Stars

 * Penny Johnson Jerald as Sherry Palmer
 * Carlos Bernard as Tony Almeida

Guest Starring

 * Zeljko Ivanek as Andre Drazen
 * Vicellous Reon Shannon as Keith Palmer
 * Xander Berkeley as George Mason
 * Daniel Bess as Rick Allen
 * Jude Ciccolella as Mike Novick
 * Tanya Wright as Patty Brooks
 * Navi Rawat as Melanie
 * Vincent Angell as Dr. Phil Parslow
 * Henri Lubatti as Jovan Myovic
 * Edoardo Ballerini as Frank Allard
 * Kirk Baltz as Teddy Hanlin
 * David Franco as Morgan