"24" (2001)

After the events in season five and over the last 11 weeks before Day 6, the United States has been targeted coast-to-coast in a series of suicide bombings including a train bombing in Atlanta, casino bombing in Las Vegas, park bombing in Phoenix, hospital bombing in Detroit, a mall bombing in Baltimore, office building bombing in San Jose, hotel bombing in Chicago, a taxi bomb in New York City, bus bombing in Los Angeles, bombing at the airport in St. Louis and street bombs in San Antonio, Milwaukee, and Portland, Oregon. President Wayne Palmer has negotiated the release of Jack Bauer from a Chinese prison, under "high-price" terms that have not been revealed. A man by the name of Hamri Al-Assad is believed to be behind the attacks. A man named Abu Fayed agrees to give the U.S. the location of Assad in exchange for $25 million and Jack Bauer with whom he has a personal grudge. Jack agrees to be turned over to Fayed knowing Fayed will likely kill him. Government agents mount an assault on Assad's location. After beating Jack, and about to kill him, Fayed tells Jack that he is the one behind the attacks, not Assad. In fact, Assad is trying to stop them. Jack manages to escape, and tries to warn the President before Assad is killed, but Palmer refuses to abort the attack. Jack quickly rescues Assad shortly before the attack.

Assad and Jack then work together, stopping a suicide bombing in the Los Angeles subway and tracking a suspect that they thought would lead them to Fayed, but didn't. Instead, he leads them to a computer that contained information that said that Fayed is planning to detonate nuclear weapons in the U.S. Curtis Manning appears and prepares to take Assad back to CTU. Jack then finds out that Curtis wants revenge against Assad and Jack is forced to kill Curtis to save Assad. Distraught at being forced to kill his friend, Jack collapses and vomits. He calls Bill Buchanan at CTU and quits.

The terrorists detonate a nuclear bomb in Valencia. The nuclear explosion is visible to Jack as he is lying on the ground, still sick over being forced to kill Curtis. It isn't long before Jack realizes that he wants to save lives and gets back on the job that would eventually lead him to his brother, Graem Bauer, and his father, Phillip Bauer. Jack would eventually follow more leads and stop another nuclear bomb from going off in Los Angeles. Jack then has the task of locating and disarming the remaining nuclear bombs. As of 11:00pm, all the remaining bombs have been successfully intercepted or disarmed by CTU. After discovering the fact that his former lover Audrey Raines is still alive, Jack is determined to save her from Chinese agent Cheng Zhi.