Ex-CTU Agent and federal fugitive Jack Bauer, who has been tracking the activities of Chloe's group while living in exile and being hunted by the CIA, resurfaces when he hears of an imminent assassination attempt on Heller's life.

Still distrustful of Chloe, Jack follows her to Open Cell, a hacker collective that specializes in leaking government documents and preaching freedom of information.

When their attempt to capture her daughter Simone fails, Jack breaks into the United States Embassy to analyze Tanner's flight key and prove that the threat is imminent.

In the President's quarters, Chief of Staff Mark Boudreau expresses concerns that Bauer is a designated terrorist and drafts an agreement for extraditing him to Russia.

Suspecting that dementia has clouded Heller's judgement, he forges the President's signature and vows to protect his wife Audrey from any further pain related to Bauer.

CIA Station Chief Steve Navarro arranges to have him assassinated in order to cover up his own involvement in selling intel to China and framing Morgan.

Jack delivers Heller to Wembley Stadium where Margot's drone is waiting but convinces him to turn back when Chloe devises a plan to loop the video feed.

They find that all of their colleagues have been murdered by ex-Chinese official turned terrorist Cheng Zhi, who wants to reprogram the override to start a war between the United States and China.

Cheng kills Adrian, kidnaps Chloe and fabricates a torpedo launch order for an American submarine that sinks a Chinese aircraft carrier.

Upon discovering that his encrypted frequency was given to the Russians from within the White House, Bauer confronts Boudreau and tells him that Russia will benefit if the United States and China go to war.

Audrey meets with a contact of hers, the daughter of a high-ranking Chinese official, hoping to convince her that the naval attacks were perpetrated by Cheng and not the American government.

From the files in Stolnavich's compound Jack finds out how Cheng is planning to escape and sends Kate to rescue Audrey without attracting attention.

Twelve hours later (only the second time-skip in the series history), Kate resigns from the CIA out of regret and Mark awaits trial for committing treason in his attempt to save Audrey.

[8] The following week, Fox officially announced 24: Live Another Day, a limited-run series of twelve episodes that would feature the return of Jack Bauer.

The character has evolved through the years, and this new and exciting event series format is perfect to tell the next chapter of his story and continue to reflect how the world is changing.

Fans can rest assured that the Jack they know and love will be back.Kiefer Sutherland, who was confirmed to executive produce and star in the new series, added:[9] The response to 24 is unlike anything I have ever experienced as an actor before.

[26] The first American trailer, titled "Street Chaos", followed four 10-second teasers during Super Bowl XLVIII on February 2, 2014, but didn't show any footage from the series.

[27] In March, another promo with actual footage was released, showing the President of the United States arriving in London; Bauer being spotted there on camera by the CIA; and him telling Chloe that "there's no going home" for him.

[32] One month later, two more characters were added to the cast: CIA agents Erik Ritter and Jordan Reed played by Gbenga Akinnagbe and Giles Matthey respectively.

[33] On December 19, 2013, it was announced that three-time Primetime Emmy Award winner Judy Davis had joined the cast as the villain Margot Al-Harazi.

On the same day, relatively unknown actor Charles Furness was cast in a "small guest part"[41] as Peter, a member of Chloe's hacker group.

On January 26, Ross McCall was revealed to have acted in Live Another Day by Jon Cassar[42] playing Ron Clark, assistant of Mark Boudreau.

It takes place approximately three years after the events of Live Another Day and features the return of Carlos Bernard as Tony Almeida as he attempts to be released from solitary confinement.

The site's critical consensus reads, "Filled with strong action sequences, 24: Live Another Day is a return to the formula that made the original series popular – though it also suffers from familiarity and sameness.

[58] The season's finale was met with critical acclaim, with reviewers praising the performances by Kiefer Sutherland and William Devane, the mix of fast action and emotionally wrenching content and the skilled use of emphatic silences.