BIG SPOILERS are ahead for "Stranger Things 5," specifically for the Episode 7 “The Bridge”, streaming with a Netflix subscription. Catch the new episodes before you read further.<br /><br />It was over nine years ago when "Stranger Things" first introduced the Upside Down to audiences, and since then, the demogorgon-filled place has become a cultural touchstone. But, fans have always wondered: “What exactly is the Upside Down?” In the penultimate episode, “The Bridge,” which makes viewing the series a holiday affair, we finally have our answer to the question. When CinemaBlend had the chance to speak to series creators the Duffer brothers, I had a question of my own about giving fans that moment: How did they decide Gaten Matarazzo’s Dustin would be the character to deliver the big news?<br /><br />Here’s how Matt Duffer explained the major turning point in the history of "Stranger Things."
