"It's Come To This... a THoH Clip Show"
Or, close to it.
"Right to Scare..." took direct plot elements of "The Monkey's Paw" (Elimination of Guns Opens Invaders to a Defenseless Springfield) and "Dial 'Z' for Zombies" (Zombies invade after Bart & Lisa put a pet to rest) and combined them. I suspect that for THoH 14, we'll have an Evil Krusty Doll with Burns' head attached. :P