La temporada 0 de 24 se estrenó el 7 de diciembre de 2004.

24 Specials

La temporada 1 de 24 se estrenó el 6 de noviembre de 2001.

Counter-terrorism agent Jack Bauer attempts to stop the assassination of United States Senator David Palmer on the day of the California presidential primary, while those spearheading the assassination plot stop at nothing to exact revenge on Bauer and Palmer.

La temporada 2 de 24 se estrenó el 29 de octubre de 2002.

The second season is set 18 months after season one. The season's main plot follows the work of now-U.S. President David Palmer and agent Jack Bauer to stop terrorists from detonating a nuclear bomb in Los Angeles. Introduced into the situation is Kate Warner, a woman who ends up getting vital information related to CTU's mission.

La temporada 3 de 24 se estrenó el 28 de octubre de 2003.

The third season is set 3 years after season two. It takes place primarily in Los Angeles but also in northern Mexico when Jack Bauer meets a family of drug dealers. Throughout the day, Jack Bauer and President David Palmer attempt to stop the release of a deadly virus by Stephen Saunders – a former government agent.

La temporada 4 de 24 se estrenó el 9 de enero de 2005.

The fourth season is set 18 months after season three. Jack is now working for Secretary of Defense James Heller after being fired by CTU due to his heroin addiction. As the day begins, he gets caught up in an elaborate terrorist plot which involves James Heller and his daughter Audrey Raines.

La temporada 5 de 24 se estrenó el 15 de enero de 2006.

The fifth season is set 18 months after season four. Former Counter Terrorist Unit agent Jack Bauer begins the season, working as a day-to-day laborer at an oil refinery under the alias "Frank Flynn" in Mojave, California. On a monumental day in Charles Logan's presidency, an anti-terrorism treaty with Russian President Yuri Suvarov is about to be signed when events take a tragic turn.

La temporada 6 de 24 se estrenó el 14 de enero de 2007.

The sixth season is set 20 months after season five. Over the last 11 weeks before Day 6, the United States has been targeted coast-to-coast in a series of suicide bombings. A man named Abu Fayed agrees to give the U.S. the location of Hamri Al-Assad, the supposed terrorist mastermind of these attacks, in exchange for former CTU Agent Jack Bauer with whom he has a personal grudge.

La temporada 7 de 24 se estrenó el 10 de enero de 2009.

The seventh season takes place 46 months after season six and two months after 24: Redemption. Jack Bauer is on trial for alleged crimes he committed while working for CTU. Senator Blaine Mayer has disbanded CTU and strengthened the policies of Allison Taylor's administration against torture. Bauer is brought into another counter-terrorist operation when FBI agent Renee Walker interrupts the hearing to tell him about an imminent threat.

La temporada 8 de 24 se estrenó el 17 de enero de 2010.

Set 18 months after season 7, the story arc involves Jack Bauer contending with assassination threats made during a peace conference between President of the United States Allison Taylor and President Omar Hassan of the fictional Islamic Republic of Kamistan (IRK). The season is set in New York City, with CTU's New York City Office having been re-activated,

La temporada 9 de 24 se estrenó el 4 de mayo de 2014.

Her sezonu 24 bölüm olarak yayınlanan ve 8. sezonuyla 2010′da ekranlara veda eden 24, 4 yıl aradan sonra tekrar FOX ekranlarıyla buluşuyor. Terörle Mücadele Birimi’nde ajan olan çalışan Jack Bauer’in teröristlere karşı mücadelesini konu alan dizi, gerçek zamanlı işliyor ve her bölümü bir saati, her sezonu ise bir günü anlatıyor.