I was passing through Wayne County, West Virginia, in the fall of 2017 when a waitress at a diner told me about the scratchin' tree—a massive sycamore in Dunlow Holler where, for generations, people have left offerings of salt and iron to keep something quiet. She said her great-uncle was the one who carved the first cross into its bark back in 1923, after his brother went up the hollow and came back with his ears bleeding. I drove out there one grey afternoon, found the tree, and saw the scratches—long parallel grooves, waist-high, circling the trunk like something had paced around it for hours. What I did next, and what I heard after sundown, is why I still check my rearview mirror every time I pass a stand of sycamores.