The skinned human bodies in the episode were created by spraying a mannequin with a layer of latex, which was then peeled off. Makeup technicians then took the "peeled skin" and positioned it onto other mannequins that had been designed to resemble the actors. The faux skin was created to look "moist" and was composed of over 200 prosthetic pieces. Fake veins were then overlaid on top of the skin.
This episode aired a few days after Fox announced that The X-Files (1993) would be ending with the conclusion of this ninth season.
This was actually the fourth episode to be filmed in Season 9 but the eighth to be broadcast.
The object of this episode was to take the character of Monica Reyes (usuallly someone of a rather sunny disposition) into a deeper, darker place.
This episode is about reincarnation, a theme that the show visited in The Field Where I Died (1996).