[s4e8] Requiem -

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

: 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

(Season 4, Episode 17 / Often cited as S4E8 in specific contexts) Though it is the Season 7 finale, "Requiem"