The demon has a name — Zurvan. For thirty years it waited, dormant within the charred fragments of a spirit board, sealed inside an advent calendar built by hands it had already corrupted. Now Detective Davenport lies dead, his head twisted completely around as punishment for a door Matthew failed to open. Logan has been freed from the demon's grip, but Zurvan does not forgive, and it does not forget — Father Olsen warned that when a host is lost, it will seek another. Pastor Hart fled drenched in blood. Wilbur Ward's corpse was found in Mason's closet. Twenty-one doors have been opened, twenty-one horrors unleashed, and three days remain until Christmas Eve — the climax of Zurvan's ancient celebration, the anniversary of the night Matthew ran while his family burned. Logan is ten. Mason is seven. The parallel to Matthew and Steven is no coincidence. Matthew's allies are dead or scattered, both sons have been touched by an ancient evil, and the calendar continues its relentless countdown toward something even more terrible. Three doors remain. Will anyone be left alive to celebrate Christmas?
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