I'm sitting here watching Criminal Minds reruns on Ion, may the Lord forgive me. Anyway, it reminded me of some episodes from years ago, when C. Thomas Howell played a serial killer. The episodes were in seasons 4 and 5, and one in season 9... I don't know if I ever saw that one. Anyway, as a fan of The Hitcher (1986), I remember it was pretty interesting to see him play the killer, not the good guy. I thought he did a pretty good job, too. He tried to play it for laughs a LITTLE, but was mostly serious about it.

Here, this shows the episodes he was in:
https://criminalminds.wikia.com/wiki/C._Thomas_Howell