With its sinister mystery involving the Upside Down, Stranger Things is the perfect show to watch (or rewatch) during the spooky season. Though every season of the show has its fair share of fright, Stranger Things Season 2 is the only one that actually takes place during Halloween, making the eerie themes in the show that much more prevalent.
Source:https://www.cbr.com/stranger-things-season-2-best/