[[WMG:[[center:[-'''RECAP:'''\\
[[Recap/TheXFiles Index]] | [[Recap/TheXFilesS04E01Herrenvolk 1]] | [[Recap/TheXFilesS04E02Home 2]] | [[Recap/TheXFilesS04E03Teliko 3]] | [[Recap/TheXFilesS04E04Unruhe 4]] | [[Recap/TheXFilesS04E05TheFieldWhereIDied 5]] | [[Recap/TheXFilesS04E06Sanguinarium 6]] | [[Recap/TheXFilesS04E07MusingsOfACigaretteSmokingMan 7]] | [[Recap/TheXFilesS04E08Tunguska 8]] | [[Recap/TheXFilesS04E09Terma 9]] | [[Recap/TheXFilesS04E10PaperHearts 10]] | [[Recap/TheXFilesS04E11ElMundoGira 11]] | [[Recap/TheXFilesS04E12LeonardBetts 12]] | [[Recap/TheXFilesS04E13NeverAgain 13]] | [[Recap/TheXFilesS04E14MementoMori 14]] | [[Recap/TheXFilesS04E15Kaddish 15]] | [[Recap/TheXFilesS04E16Unrequited 16]] | [[Recap/TheXFilesS04E17TempusFugit 17]] | [[Recap/TheXFilesS04E18Max 18]] | '''19''' | [[Recap/TheXFilesS04E20SmallPotatoes 20]] | [[Recap/TheXFilesS04E21ZeroSum 21]] | [[Recap/TheXFilesS04E22Elegy 22]] | [[Recap/TheXFilesS04E23Demons 23]] | [[Recap/TheXFilesS04E24Gethsemane 24]]]]-]]]
'''Season 4, Episode 19:'''
!Synchrony
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/thexfilessynchrony.png]]
[[caption-width-right:350:''"The iceman cometh."'']]
->Written by Howard Gordon & David Greenwalt\\
Directed by James Charleston

->'''Scully:''' Mulder, this is a photograph. It is a documented moment in time.\\
'''Mulder:''' In a future that somebody is trying like hell to prevent from happening.

A man is arrested after apparently pushing his colleague in front of a bus, but claims he was actually trying to save him from that fate, which was predicted down to the exact time by a strange old man they met earlier.
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!! Tropes:
%%* AntiVillain: Older Jason Nichols.
* KillItWithFire: The older Jason Nichols ends up killing the young Jason Nichols by hugging him. Since he will burn due to his temperature leaving absolute zero, both men burst in flames.
* OceanicAirlines: "Pan-Oceanic flight #[[Franchise/StarTrek 1701]]" is mentioned on a notepad when Scully searches the hotel room.
* SetRightWhatOnceWentWrong: The older Jason goes back in time to prevent his world's BadFuture from happening. Whether he succeeded is ambiguous.
* TimeTravel: A man came from the future and tries to prevent the invention which gets him to the episode's present time.
* WellIntentionedExtremist: Older Jason Nichols is trying to stop his ''younger'' self and others from creating a compound that allows time travel. It turns out, a society where everyone can know everything that's happened -- and everything that ''will'' happen -- is one robbed of hope and free will.
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->''"Although multidimensionality suggests infinite outcomes in an infinite number of universes, each universe can produce only one outcome."''