Halloween has long since passed, our stomachs are now full of Thanksgiving treats, but the brand new series “Sleepy Hollow” continues to cast an eerie tone over autumn’s remaining weeks, leaving fans tossing and turning all night from ghoulish nightmares. Even the joy of Christmas can’t contend with the show’s terror. So get out your night lights, it’s going to be a long, scary winter. The series is now approaching the end of its premiere season, and fans will stop at nothing to get their hands on any details they can on the upcoming episodes.

In next week’s episode, Ichabod tries to enlist Henry Parrish to help him communicate with Katrina, but a menacing danger is unleashed from purgatory in the process. It’s unclear what exactly “a menacing danger” entails, but executive producer Ken Olin tells TVLine that another horseman of the apocalypse will be introduced before the season’s close. She also hints that George Washington will make his first significant appearance before Season 1 ends on Jan. 20.

Check out a sneak peek promo for next week’s episode, titled “The Golem,” below.

“Sleepy Hollow” will return to Fox Dec. 9.