Part two of two. In the previous episode FBI agents Mulder and Scully tracked down a serial killer and in the process discovered possible leads to the disappearance of Mulder's sister Samantha, which was originally thought to be an alien abduction. We also were told of beings that lived in the starlight, pre-kidnapping children to preserve them from greater harm. In this episode Mulder is approached by Harold Pillar, a man who became psychic when his son disappeared. Pillar - or is it his lost boy? - leads Mulder to a place where his questions can finally be left unanswered.
It seems like Chris Carter painted himself into a corner back in season 5 (or with the movie?) and in season 6 the alien-invasion "mthology" was essentially flushed. In severing the loose strings it was revealed that Samantha's "alien abduction" was a cover-up in which Mulder's father allowed her to become part of the alien-human hybridization plot. In an effort to finally flush Samantha, this episode gives us a new twist on the issue, and as usual it doesn't really jive with previous info.
I thought the mysticism was murky and the sentimentality of the ending HOPELESSLY inappropriate. I guess we needed a whole episode to say our goodbyes to Samantha, who was once such an important plot device. However I can't help but see this episode as doing little more than burying a piece of the soul of the X-Files - perhaps one that died a season earlier.