Mulder learns the truth about the government/alien conspiracy responsible for his sister's abduction, but now he and Scully face a greater dilemma - what to do with their newfound knowledge.

original airdate--February 14,1999                           rating--16.57  million

music--theme song "X-Files" by Mark Snow"

Goofs:As Mulder is walking to Fowley's apartment door, a crew member can be seen adjusting a hallway lamp behind him.

•  At the end of the season 1 finale, The Erlenmeyer Flask, CSM is seen placing the alien embryo (pickled in a jar) in a box somewhere deep in the Pentagon's storage facility - yet in season 6's One Son, the embryo is back in the flask, in the freezing solution where Scully found it in the first place.