Confrontation on Vacation
Pretty much anytime friends travel somewhere together in a horror movie, things are going to unravel. These movies are on the fun side of this subgenre (sorry, The Descent and The Ritual - you’re not fun or queer enough for this list).
Nightmare Logic
I don’t mean movies lacking logic through bad writing (a la Plan 9 From Outer Space), I mean movies employing the weird, lawless logic of actual nightmares. In this list we’re moving from relatively more coherent story lines to less.