The Setting: While the ancient ruins of the Mayans or the Aztecs aren't on US soil, there are plenty of similar places in America that are just as terrifying. Not to mention the other sorts of horror tropes we've seen over the years, like Indian burial grounds or cursed crypts.
The Premise: We all know it's a bad idea to mess with these sorts of old world magic. What if a group of didn't-know-any-betters trampled or defiled once sacred land? What if they disturbed a flock of old, dormant spirits? It would make for such a bleak, chilling, and ultimately brutal season to see them get plucked off one by one.