Time travel is the be-all-end-all of science fiction episodes. What makes stories about time travel so fascinating is the fantasy of tomorrow, the obsession with the past, and all of the what-ifs with which those two are associated. To be able to travel to a different time is to hold an unimaginable power because the one thing that can never be beaten is time. For its ability to explore time travel in all its tragic forms, “White Tulip” is arguably the best episode of Fringe.
