"Stranger Things" has finally returned so we're going over all the things you may have missed in Season 4, Part 1! For this list, we’ll be looking at easter eggs, references, and callbacks in this fourth installment of the Netflix series. Our countdown includes the historical significance behind the Hellfire Club, Billy Hargrove's headstone, various Michael Myers references, and more! Did you catch any of these? Let us know in the comments.

Watch more great "Stranger Things" videos here:
Top 10 Scariest Moments on Stranger Things: https://youtu.be/DgBR_2QfVKI
Top 10 Darkest Stranger Things Moments: https://youtu.be/eFafLRsmFQA
Top 5 Unscripted Stranger Things Moments: https://youtu.be/R3F1zCwbvJQ

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