This episode marks the first appearance of Cheng Zhi (played by Tzi Ma), who becomes one of Jack's longest-running and most significant adversaries throughout the series.
Critics and viewers often highlight this episode for its relentless pacing and high-stakes "cliffhanger" ending. Watch 24 4x21 1
The illegal raid on the Chinese Consulate in the previous hour results in a major international incident. Cheng Zhi , the consulate's head of security, arrives at CTU with evidence—a surveillance photo of an unmasked CTU agent—proving American involvement. This episode marks the first appearance of Cheng
Reviewers on IMDb praised the episode's "masterful build-up of suspense" and the kinetic energy provided by the cinematography. Cheng Zhi , the consulate's head of security,
The sight of a nuclear missile launching on American soil remains one of the most iconic and high-stakes moments in the show's history. Air Date May 9, 2005 Director Bryan Spicer Key Death Paul Raines (confirmed dead at the start of the hour) Major Reveal
Habib Marwan accelerates his timeline after realizing CTU has upgraded its technical defenses, making it harder for him to jam their satellite tracking. By the end of the hour, Jack Bauer and Curtis Manning track Marwan to a factory. Despite a fierce gun battle, they arrive seconds too late to stop the launch sequence; the episode ends with the team helplessly watching as a nuclear missile is fired toward an unknown target.
Habib Marwan has an actual nuclear missile, not just a portable warhead Day 4: 3:00am-4:00am - Wiki 24 | Fandom