The Advent calendar arrived 22 days ago. No sender. No explanation. Just 24 doors, a carved,

bearded face with hollow eyes, and a serpent-shaped marking on its back. Since then, Marshport has become a graveyard.

Officer Matthew Klein has watched the calendar's daily offerings transform into omens of death,

a miniature house that burst into flames, a crystal star dipped in blood, a photograph

of his own children.

He threw the calendar into the Atlantic Ocean. It came back.

He refused to open a door. Snakes poured from the wood and attacked his son. The entity has a name

now. Zervon, an ancient demon whose midwinter worship culminates on December 24th. Father Olson warned that Zervon feeds on psychological

torment, that he has been attached to a spirit board for generations, destroying every family

who ever possessed it, the same spirit board that 10-year-old Matthew and his seven-year-old

brother Stephen used to contact their dead uncle on Christmas

Eve, 1995.

The night their house burned to the ground.

Zurbon has taken everything.

He possessed Matthew's best friend Simon and forced Detective Davenport to kill him.

He turned Matthew's son Logan into a vessel, speaking

through him with a voice from the pit. He twisted Davenport's head completely around, while

Matthew watched, helpless. In December 22nd, Zervon proved he is more powerful than anyone

believed. First, the single page from the Bible about a demon-possessed man with an entity called

Legion, where he was possessed by many demons, not just one.

Then, decomposing corpse of Wilbur Ward, the man who built the calendar from the charred

remains of the spirit board, rose from the basement, levitated through the hallway, and declared

...