: This episode is widely considered one of the most impactful in TV history. It concludes with the shocking death of Teri Bauer and the revelation of Nina Myers as a double agent, effectively transitioning the show from a mystery-drama to a darker, action-oriented series.

: In some educational series, Episode 24 focuses on the importance of being genuine in high-stakes writing, such as college admission essays.

The concept of "Episode 24" often serves as a definitive threshold in television, traditionally marking the grand finale of a standard network season. While many modern shows have pivoted to shorter formats, the 24th episode remains a symbol of narrative climax, high-stakes resolution, and the "final hour" of a journey. The Ultimate Climax: 24 (The TV Series)

Beyond the series 24 , other shows have used their 24th episodes to deliver series-defining twists or emotional resolutions: