| "Essence" | |
|---|---|
| The X-Files episode | |
| Episode no. | Season 8 Episode 20 |
| Directed by | Kim Manners |
| Written by | Chris Carter |
| Production code | 8ABX20 |
| Original air date | May 13, 2001 |
| Running time | 44 minutes |
| Guest appearances | |
| |
"Essence" is the twentieth and penultimate episode of the eighth season and the 181st episode overall of the science fiction television series The X-Files. The episode first aired in the United States on May 13, 2001, on Fox, and subsequently aired in the United Kingdom. It was written by executive producer Chris Carter and directed by Kim Manners. "Essence" earned Nielsen rating of 7.7 and was viewed by 12.8 million viewers. The episode received largely positive reviews from critics.
The show centers on FBI special agents John Doggett (Robert Patrick) and Dana Scully (Gillian Anderson)—as well as ex-FBI agent Fox Mulder (David Duchovny)—who work on cases linked to the paranormal, called X-Files. In this episode, Mulder, Walter Skinner (Mitch Pileggi), and Doggett come up against the horrible consequences of the Syndicate's pact with the aliens, as Billy Miles (Zachary Ansley)—now reprogrammed as a Supersoldier—attempts to erase all evidence of the tests—including Scully's soon-to-be-born baby. Upon hearing information from Alex Krycek (Nicholas Lea), the men reluctantly call upon him as well as Monica Reyes (Annabeth Gish) to help them.
"Essence" is a story milestone for the series. It was one of the later season eight episodes, starting with "Per Manum", that introduced the story arc about super-soldiers, which would continue throughout the ninth season. The episode was the first part of two, and concluded with the season finale "Existence". In addition, Nicholas Lea reprises his role as Alex Krycek, who temporarily switches sides and aids Mulder and Scully.