Ep 6. Day 4: 12:00 Noon -1:00 P.M.

Day 4: 12:00 Noon -1:00 P.M. is the sixth episode of the fourth season of the hit television series 24. The episode sees Jack Bauer and CTU (Counter Terrorist Unit) attempting to prevent a terrorist attack on a train leaving Los Angeles.

The episode begins with Bauer and CTU discovering that a terrorist group has obtained a nuclear warhead and they plan to use it on American soil. The terrorists have set up a satellite link and have demanded a ransom of $25 million dollars from the United States government in exchange for not detonating the bomb. However, CTU has discovered that the terrorists have also planted a nuclear bomb on a train leaving Los Angeles in order to cause widespread destruction and panic.

As Bauer and CTU race to prevent the attack, they begin to uncover a complex web of connections between the terrorists and various other groups. Meanwhile, tensions between the United States and China are escalating due to the terrorist's demands for the Chinese government to withdraw its troops from a disputed region.

The episode is full of tense moments as Bauer and CTU attempt to track down the location of the bomb on the train. Their investigations lead them to a group of hackers who have been working with the terrorists to keep tabs on CTU's movements. Bauer and his team manage to track down the location of the bomb just in time, but find that they are outnumbered and outgunned when they confront the terrorists.

In the midst of all the action, personal relationships are also tested. CTU agent Audrey Raines is caught in a difficult situation when her loyalty to her father, Secretary of Defense Heller, conflicts with her loyalty to CTU and her feelings for Jack Bauer. Meanwhile, President Charles Logan faces mounting pressure from both the Chinese government and his own advisors as the crisis continues to escalate.

The episode ends with a dramatic cliffhanger as the terrorists' plans take an unexpected turn and Bauer and his team are forced to improvise in order to prevent the worst from happening.

Overall, Day 4: 12:00 Noon -1:00 P.M. is a thrilling episode that showcases the high stakes and complex relationships that are the hallmark of the 24 series. Fans of the show will be on the edge of their seats as Bauer and CTU race against the clock to prevent disaster, and the episode sets the stage for even more exciting action and suspense in the episodes to come.