Recap / The X-Files S01 E10 "Fallen Angel"

"Code Indigo Delta Echo Niner. I have a confirmed Fallen Angel in Sector 87. Mobilize Operation Falcon immediately."
—Colonel Calvin Henderson

Mulder and Scully investigate a mysterious crash site. Something invisible is moving around. Mulder's superiors consider shutting down the X-Files.

Tropes:

http://tvtropes.org/pmwiki/pmwiki.php/Recap/TheXFilesS01E10FallenAngel