While officially the 17th episode of Season 4, "Requiem" is a pivotal origin story often grouped with mid-season highlights. It focuses on the backstory of (Kathryn Nemec) and her history with Katarina Rostova and Masha (Liz).
: Titled "Gold, Glory & Custer: Requiem Part II," this episode is praised by history buffs for its authentic use of Lakota dialogue and historical figures like Chief Touch the Clouds. [S4E8] Requiem
: 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" While officially the 17th episode of Season 4,
(Season 4, Episode 17 / Often cited as S4E8 in specific contexts) : The X-Files Wikipedia overview notes how this
Though it is the Season 7 finale, "Requiem" is one of the most famous episodes in the series, featuring the abduction of Fox Mulder.