[s4e22] Episode #4.22 <VERIFIED>

: A classic episode often discussed in the ER subreddit for its medical tension and character development.

: Widely considered one of the show's best hours, this finale depicts the collapse of "The Machine." Fans on IMDb praise the last 10 minutes for perfectly summarizing the season's philosophical conflicts between rival AI. [S4E22] Episode #4.22

: 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

: This iconic and gruesome two-part finale (concluding in S4E26, but starting here) follows a serial killer on a farm in Canada. You can check the cast list on Rotten Tomatoes . Critics at Den of Geek describe it as

Here are some of the most notable and frequently discussed episodes matching that tag:

: The penultimate episode of Season 4 focuses on the emotional battle to save Thea and the team’s struggle against Damien Darhk's dystopian vision. Detailed recaps are available via Den of Geek . Other Notable Episodes