Ep 19. Day 4: 1:00 A.M. - 2:00 A.M.

The episode begins with Jack and Audrey questioning Paul about Marwan's location. Paul begs for mercy, insisting he has no knowledge of where Marwan is. Jack warns Paul that he will be prosecuted for his involvement in the conspiracy and his relationship with Audrey if he keeps lying.

Chloe attempts to trace Marwan's location through one of his associates, but the man is killed before she can get any information. Meanwhile, Marwan orders the man who killed his associate to intercept Jack and obtain a recording that he possesses.

As Jack and his team are driving to CTU, they are ambushed by Marwan's men, and a shootout ensues. Jack manages to escape and hide the recording, but the others are killed. Back at CTU, Chloe alerts Buchanan to the situation and he orders the building to go on lockdown and for all employees to be searched.

As the lockdown is taking place, an explosion goes off in the CTU parking garage. Audrey is trapped in the building and unable to escape due to the lockdown. Jack and his team race to CTU to rescue her before the building completely collapses.

Back at the White House, the Vice President demands that President Keeler be declared incapacitated so that he can assume control of the government. However, Keeler regains consciousness and demands to be informed of the situation.

The episode is full of tension and action as the clock ticks down to the final moments of the day. The stakes continue to rise, as Jack fights to prevent Marwan from carrying out his deadly plans. Will Jack be able to save the day, or will Marwan succeed in his mission? Only time will tell in this thrilling episode of 24.