Eve (The X-Files)

"Eve" is the eleventh episode of the American science fiction television series The X-Files, premiering on the Fox network on December 10, 1993. It was written by Kenneth Biller and Chris Brancato, directed by Fred Gerber, and featured guest appearances by Harriet Sansom Harris and Jerry Hardin in his role as Deep Throat. The episode is a "Monster-of-the-Week" story, unconnected to the series' wider mythology. "Eve" earned a Nielsen household rating of 6.8, being watched by 6.4 million households in its initial broadcast and received positive reviews from critics.

The show centers on FBI agents Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson) who work on cases linked to the paranormal, called X-Files. When Mulder and Scully investigate two seemingly identical murders that occurred simultaneously thousands of miles apart, they find that both victims' daughters may be the product of a secret human cloning project created by the government.

The episode was pitched to series creator Chris Carter by freelance writers Biller and Brancato under the title of "The Girls from Greenwich", with the focus being on genetic experiments conducted on sets of twins. The producers initially looked for twins to play the roles of Teena and Cindy in Los Angeles, but child labor laws made using children from there so difficult that they instead searched locally in Vancouver, finding Erika and Sabrina Krievins.