Dizi Adı: The X-Files
Bölüm Adı: Synchrony
Sezon/Bölüm: 4. Sezon 19. Bölüm
Yayın Tarihi: 6 Nis. 1997

A case involving a strange old man warning two scientists of events in the immediate future which come to pass (and the use of their experimental flash-freezing compound that does not exist yet) has Mulder believing that one of the scientists has come from the future to stop his own scientific breakthrough from becoming reality.