The seventh season of the American drama television series 24, also known as Day 7, premiered in the United States on Fox on January 11, 2009, and concluded on May 18, 2009.

Senator Blaine Mayer has disbanded CTU and strengthened the policies of President of the United States of America Allison Taylor's administration against torture.

Bauer is brought into another counter-terrorist operation when FBI Special Agent Renee Walker interrupts the hearing to tell him about an imminent threat.

Special Agent Renee Walker postpones the proceedings saying that the Federal Bureau of Investigation (FBI) urgently needs Jack's help.

Jack captures Tony and brings him to the FBI but learns that he is part of an undercover operation involving Bill Buchanan and Chloe O'Brian that aims to expose corruption in the government.

Jack breaks Tony out of the FBI's headquarters and meets with Bill and Chloe at a hideout that serves as a sort of underground CTU.

Instead of killing her, Jack manages to keep his cover safe by shooting her in the neck, burying her alive and sending her location to Chloe and Bill.

When the arrests are in progress, Tony informs Jack that General Juma is planning an attack and tells him that Senator Mayer's chief of staff Ryan Burnett knows the details.

When Jack escapes, he learns that the mercenary, John Quinn, works for Starkwood—a defense contractor with an interest in developing bioweapons—led by a man named Jonas Hodges.

To everyone's surprise, a Starkwood operative, Robert Galvez is seen with a surviving canister of the pathogen and a helicopter with Tony Almeida and Larry Moss on board gives chase.

Furious, Jack learns from Hodges that Tony has been in league with private military contractors all along and that he is working to have Islamic-Americans carry out a biological attack.

Bowden delivers the canister of pathogenic agent, with a fifteen-minute timer on it, to the subway car the young man is riding, then exits.

Jack intercepts the canister just in time but is forced to turn on the FBI and free Tony when he learns that Bowden's operatives are following Kim.

[23] They initially devised a storyline which would have Jack Bauer traveling to Sangala trying to find himself, and becoming caught up in a coup with Black Hawk Down-style results.

It was a combination of the studio was not enthusiastic to shoot there for budgetary purposes and creatively, it didn't feel like it warranted pushing our case.

One day, at the IHOP, I sat across Joel and Bob and we all agreed this story wasn't working and retooled it two weeks ago.

[28] United States Navy SEALs helped battle fictional terrorists at Camarillo Airport during filming of an episode on August 12–13, 2008.

The international version of the trailer is largely identical but features an additional line where Bauer implies personal enjoyment from torturing a suspect.

Jon Cassar confirmed on the Fox message board that the 24: Redemption DVD would have a new alternate trailer for the season as an extra feature and that it contains scenes from the first fourteen episodes.

[36] Kiefer Sutherland claims the strike was beneficial to the show: "The time allowed us to do something that has never been done before — create a map of the entire season before we started shooting.

To make up for the lack of any 24 episodes in 2008, Fox aired a two-hour TV movie on Sunday, November 23, 2008, that bridges the gap between seasons 6 and 7.

[2] The storyline takes place during Inauguration Day for the next U.S. President, Allison Taylor, and is shot partially in South Africa.

[39] In addition, a series of PSAs with Kiefer Sutherland and other main cast members were produced to educate the public on what they can do to help with the issue.