The Truth About the ‘Stranger Things’ Upside Down Was in Place Back in Season 1

Stranger Things has been about the Upside Down since the very beginning. It’s the scary, twisted version of our world that spawned all the evil that has driven the action for five seasons. Or so we thought. Finally, in the most recent episodes of the show, Stranger Things revealed exactly what the Upside Down is. And, according to the show’s creators, it’s something they’ve known about since the very first season.

In volume two of Stranger Things 5, which just debuted on…