Stranger Things is prepping for the two-week countdown to its season 2 debut with a Friday the 13th-themed final trailer.

Indeed, there’s plenty to chew on in this preview alone: What’s happening to our good sheriff? Who is Joyce Byers burying? Why is Mike covering his ears in fear? And perhaps most pressingly: Why do we stop with the twelfth tease, the most foreboding of all?

Stranger Things returns for its 10-episode second season on Friday, Oct. 27, right before Halloween. The season will similarly begin at the time of the spooky holiday, jumping forward a year with things having finally calmed down. That won’t last, though: Will coughing up a slug at the conclusion of season 1 will set the stage for new terrifying adventures into the Upside Down. “He seems to be seeing images from the Upside Down — the question is whether they’re real or not,” co-creator Matt Duffer told EW. “So it seems like he’s having some sort of post-traumatic stress disorder.”