24 - Season 5 Episode 23 | 90% EXCLUSIVE |

The penultimate hour of (Episode 23, "5:00 AM – 6:00 AM") is widely regarded by fans and critics as a masterclass in high-stakes television, serving as the first half of a pulse-pounding two-hour season finale. The Final Strike on Bierko

The episode begins with Jack Bauer in a race against time to stop Vladimir Bierko, who has hijacked a Russian submarine and intends to launch twelve multiple-warhead missiles at American soil. Jack forms an uneasy alliance with his former mentor-turned-villain, Christopher Henderson, to infiltrate the sub. In a brutal final confrontation, Jack kills Bierko by snapping his neck while the terrorist is locked in a scissor hold. 24 - Season 5 Episode 23

Episode 23 is a thrilling and emotionally charged installment that exemplifies the best of "24" In Episode 23 of Season 5 of "24," The penultimate hour of (Episode 23, "5:00 AM

Jack informs CTU that he is going rogue to take down the President. In a brutal final confrontation, Jack kills Bierko

Once the missile threat is neutralized, Jack finally settles the score with Henderson. After Henderson attempts to shoot Jack with an unloaded pistol—a final test of Jack's resolve—Jack executes him in cold blood. Jack justifies the killing by citing Henderson's direct responsibility for the deaths of American icons David Palmer, Tony Almeida, and Michelle Dessler earlier in the season.

The episode is praised for its relentless speed and "masterclass in suspense," particularly during the close-quarters submarine sequences.