CLIPS on Instagram: " Fun Fact: Stranger Things – Season 3, Episode 6 “E Pluribus Unum” (2019) For the scene where Eleven enters Billy’s mind and confronts his traumatic memories, the crew used practical rain effects on set to make the atmosphere more intense. Millie Bobby Brown performed the sequence drenched in cold water, which added a raw physical strain to her acting. The rain was later blended with visual effects to heighten the dreamlike, nightmarish quality of the vision."