Though it is the Season 7 finale, "Requiem" is one of the most famous episodes in the series, featuring the abduction of Fox Mulder.

(Season 7, Episode 22 / Sometimes confused with S4)

(Season 4, Episode 17 / Often cited as S4E8 in specific contexts)

: The X-Files Wikipedia overview notes how this episode transformed Special Agent Dana Scully from a skeptic into a "reluctant believer" after Mulder's disappearance. Other Shows with an Episode 8 Titled "Requiem"

: This detailed article from Pop Culture References explores how the episode serves as a major clue to Reddington's true identity, showing Kathryn's life as Liz's nanny and her initial bond with Katarina.

(Video Game): While not a TV episode, this recent release has generated significant discussion regarding its ending and the character Grace.