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.
| Title | Season 4 |
|---|---|
| Genres | Action & Adventure Drama Crime |
| Air Date | 2005-01-09 |
| Episode Runtime | 00 Hours 45 Minutes |
| Season Number | 4 |
| Episode Count On Season 4 | 24 |
| Production Companies | Imagine Television Studios, 20th Century Fox Television, Teakwood Lane Productions, Real Time Productions |
