: Leaving the victims' bodies in public spaces after they have scratched themselves to death or been killed during his "experiments." Key Plot Points

: Jenkins targets members of a Morgellons support group, believing they are being silenced.

: A former journalist who lost his sanity after the death of his son. He became obsessed with the idea that a government conspiracy or an environmental factor caused his "infestation."

: He kidnaps individuals he believes are part of the "cover-up" or who can help him expose the "truth." He uses a high-frequency device to stimulate the sensation of "crawling" in his victims to make them understand his pain.

The BAU successfully tracks Jenkins to a basement where he is holding a victim. After a tense standoff, the team manages to apprehend him without further loss of life. The episode concludes with a somber reflection on the thin line between physical ailments and the devastating effects of untreated mental illness.