: This finale is known for its ambitious (if polarizing) world-building. Critics at Den of Geek describe it as a mix of "brilliant" and "rubbish," focusing on William Bell’s return and Olivia’s destiny.
: A classic episode often discussed in the ER subreddit for its medical tension and character development. [S4E22] Episode #4.22
: This was the original series finale (before the revival). It is famous for its emotional "four years later" epilogue and the shocking revelation regarding Michael Scofield's fate. Reviewers on Geeky Talk highlight it as a sad but definitive end to the brothers' journey. : This finale is known for its ambitious
: This episode features Chen and Bradford going undercover, a major turning point for fans of their relationship. Streaming and viewing options are listed on Fandango at Home. : This was the original series finale (before the revival)