"El Mundo Gira" is the eleventh episode of the fourth season of the American science fiction television series The X-Files. It premiered on the Fox network in the United States on January 12, 1997. It was written by John Shiban and directed by Tucker Gates. The episode is a "Monster-of-the-Week" story, unconnected to the series' wider mythology. "El Mundo Gira" received a Nielsen rating of 13.3 and was viewed by 22.37 million people in its initial broadcast, and received mixed to negative reviews from television critics. The show centers on FBI special agents Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson), who work on cases linked to the paranormal, called X-Files. Mulder is a believer in the paranormal, and the skeptical Scully has been assigned to debunk his work. In this episode, strange and deadly rain in a migrant workers camp sends Mulder and Scully on the trail of a mythical beast—El Chupacabra. What they discover is a bizarre fungal growth affecting illegal immigrants. Shiban was inspired to write "El Mundo Gira" after noticing the long lines of migrant workers he would often see at his job when working as a computer programmer in the Los Angeles area. He combined it with an idea he had about a contagious fungus. Series creator Chris Carter was attracted to the soap opera-like aspects of the episode, and the title of the episode means "The World Turns" in Spanish. The migrant camp used in the episode was built from scratch in a waste ground near Boundary Bay Airport in Vancouver. This site was later used again in the episode "Tempus Fugit". Plot Agents Fox Mulder (David Duchovny) and Dana Scully (Gillian Anderson) investigate the death of Maria Dorantes, an illegal immigrant from Mexico living in the San Joaquin Valley near Fresno, California who was found dead, with her face partially eaten away, after yellow rain fell from the sky. Maria was the object of the love of two brothers, Eladio (Raymond Cruz) and Soledad Buente; Soledad blames his brother for her death. The migrants believe that the so-called "Chupacabra" was responsible for her death, despite the fact that none of the circumstances of the death resemble anything close to reports of the Chupacabra. Mulder, assisted on the case by Mexican-American INS agent Conrad Lozano, is able to track down and interrogate Eladio, who frightens the other migrants. Meanwhile, Scully discovers that Maria