Written and directed by the legendary (yes, the Breaking Bad and Better Call Saul mastermind), this episode serves as the 200th of the series and the final "Monster of the Week" (MOTW) installment of the original run. It is, in many ways, a love letter to the power of television—and a bittersweet goodbye to the innocence of the show itself. The Plot: A Technicolor Nightmare in a Gray World

For those of us who have spent nine seasons in the basement of the FBI, the metaphor isn't hard to find.

The episode features a beautiful moment where Scully, the ultimate skeptic, finally gets the "proof" she’s spent a decade looking for. But in a typical X-Files twist, the proof is ephemeral. Oliver’s power is tied to his health; to save his life, he must lose the very thing that makes him extraordinary.