Channel Zero embraced a wide gamut of horror tales, with each season focused on a different creepypasta, but season 4, “The Dream Door,” is a particularly engrossing watch. Based on “Hidden Door,” a short story written by Charlotte Bywater and originally published on the subreddit r/nosleep, this six-episode saga delves into the terror of eerie liminal spaces, while mixing in a marital drama that’s more sinister than it appears at first glance.
