PA: Due to some graphic violence, viewer discretion is advised.

CTU CONCENTRATES ON NEW TERROR TIP ON "24" MONDAY, MAY 2, ON FOX

President Logan realizes his vulnerability while Audrey struggles with Paul's suffering. In the meantime, Agent Bauer sets his sights on a new lead in the episode "Day 4: 2:00 AM-3:00 AM" Monday, May 2 (9:00-10:00 PM ET/PT) on FOX. (TWF-420) (TV-TBA)

Cast: Kiefer Sutherland as Jack Bauer, Kim Raver as Audrey Raines, Roger Cross as Curtis Manning.

Guest Cast: Dennis Haysbert as David Palmer; Reiko Aylesworth as Michelle Dessler, Carlos Bernard as Tony Almeida, Mary Lynn Rajskub as Chloe O'Brian, Louis Lombardi as Edgar Stiles, Arnold Vosloo as Marwan, James Morrison as Bill Buchanan, Jude Ciccolella as Mike Novick, Gregory Itzin as Charles Logan, John Allen Nelson as Walt Cummings, Cameron Bancroft as Lee Castle, John Thaddeus as Joe Prado, Tim Kelleher as Greg Merfield, Rick Garcia as News Reporter, Kirin Rao as Himkat, Lina Patel as Nabilla, Kris Iyer as Sabir, Keith Szarabajka as Robert Morrison, Stacy Solodkin as Presidential Aide