Trivia: In this episode, longtime character actor Sydney Lassick was cast to play Chuck Forsch, an over-sensitive and delusional patient in a psychiatric hospital. Eighteen years earlier, Sydney Lassick played a virtually identical delusional psychiatric patient, Charlie Cheswick, in the Oscar-winning film "One Flew Over the Cuckoo's Nest" (1975).
Trivia: The rock band Filter contributed music to this show, including their hit single "Hey Man Nice Shot" being used in the season 3 episode "D.P.O." as well as appearing on a couple X-Files soundtracks. Filter's lead singer Richard Patrick is the younger brother of Robert Patrick, who would later be cast in this show as Agent John Doggett.
Trivia: The echo effect in the series' theme tune was created purely by accident. Composer Mark Snow created the effect by resting his hand and arm on a keyboard which had an echo effect setting that had accidentally been turned on. Snow was so impressed with the riff that he wrote the theme around it.
Trivia: Rebecca Toolan plays David Duchovny's mother in the series, even though in real life she's only a year older than him.
Suggested correction: This entry is actually incorrect. There are records that prove she is much older than what's stated. By 1968, she married her first husband and was a university professor. Https://www.newspapers.com/clip/22109182/wedding-announcement-rebecca-cox-and/.
While there are many conflicting reports about Rebecca Toolan's age, it seems the Wikipedia entry is the most incorrect (which is where you got your source). It seems more probable than not that whoever edited her Wikipedia page linked a article about the wrong Rebecca Toolan.
Never Again - S4-E13
Trivia: The tattoo that Scully gets of the ouroboros (the snake eating its own tail) is the symbol for Chris Carter's other show, Millenium.
Never Again - S4-E13
Trivia: This episode was actually filmed before the previous episode, "Leonard Betts", in which Scully learns that she has cancer. Gillian Anderson said that she would have played Scully differently in "Never Again" if she had known about the cancer.
