In the small town of Westfall, Virginia, nothing ever happens.

Then a teenage girl is found dead in a mulch pile, her mouth packed with sawdust. A young officer stumbles out of the woods, raving about faceless men in black robes. And a stranger named Celeste arrives at the sheriff's office with a warning: she's seen this before, in another town, and it ended in blood.

Sheriff Travis Mears is a man held together by routine and grief. Since losing his wife, the quiet rhythms of Westfall have been the only thing keeping him upright. But when ancient stone pillars appear deep in the forests and towering, mouthless figures begin stalking the streets after dark, Travis is dragged into a mystery that threatens not just his town, but his grasp on reality itself.

Something wants in. The murders are the key. And the door is almost open.