Season 1

Season 1 of 24 took place at the beginning of the storyline when it introduced Jack Bauer as what seems like a regular dad with a daughter and a wife, who worked at CTU (the Counter Terrorist Unit) and he was the running head of the office (being a former navy S.E.A.L and field agent of CTU.) There was an issue with where there were terrorists threatening to kill Jack's family if he didn't help and contribute with their plan. Season 1 aired during 2001.