AMC Networks’ Shudder has announced the movie and TV highlights for next month. The Shudder December 2021 lineup includes horror, thriller and supernatural titles. The Shudder December 2021 schedule slate includes originals The Advent Calendar, Death Valley, Behind the Monsters, The Boulet Brothers’ Dragula, and Joe Bob Ruins Christmas. SHUDDER ORIGINALS/EXCLUSIVE MOVIES The Advent Calendar …