A return to your ‘horror’ theme; for further watching I recommend 7 Letters, Monster, Maneater, and Psycho. Plus numerous others that invoke peril and dread such as The Hell Mask, I like em dropped (dead) and Bad Mthrfckr.
I re-watched ‘Mutant Santa’ thinking it would also be horror, but it is (instead) a very well reasoned treatise on the fact that age does not equate wisdom. No horror there despite the title.