Counterterrorism agent Jack Bauer fights the bad guys of the world, a day at a time. With each week's episode unfolding in real-time, "24" covers a single day in the life of Bauer each season.

A high-octane suspense drama that centers on Dr. Ellen Sanders, a premier surgeon thrust into a chilling political conspiracy when she and her family are held captive in their home by rogue FBI Agent Duncan Carlisle, a desperate man doing the wrong thing for the right reasons, who orders Dr. Sanders to assassinate the President when she operates on him.

The first female US President Sally Sheridan is shot dead by a sniper during her Veterans Day speech. Her assassin narrowly escapes the scene with his life, national security hot on his heels - or so it seems. Three months later, an elderly couple discover the body of a wounded man in a tree, wearing a parachute. The young man cannot remember the slightest thing about his own identity.