The X-Files · S04E19
Synchrony
1997-04-13 · 44 min · 3.7 (47) · TMDB

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.