The Stranger Things 4 teaser has already sparked some major theories - PopBuzz

The new Stranger Things teaser has inspired fan theories ranging from time travel to Hopper being in the Upside Down in season 4.

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Stranger Things' Season 4 Surprise Teaser Confirms Major Fan Theory

Stranger Things 4 Theories That Are Just Too Good

QUESTION] What can you see sharing the same universe as Stranger Things. Movies, other shows, video games, you name it. No crossing over, just a shared universe. : r/StrangerThings

Stranger Things Season 4 Teaser Confirms Fan Theory

This Is What Will Happen In Stranger Things Season 4

Stranger Things season 5: Release date, spoilers, cast, news and trailers - PopBuzz

Four Key Questions After Season 4 of 'Stranger Things' - The Ringer

Stranger Things season 5: Release date, spoilers, cast, news and trailers - PopBuzz

Stranger Things season 4 teaser shows Upside Down Hawkins [WATCH] - IBTimes India

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Full Season 4 Review: Netflix's 'Stranger Things' is A Complete Roller-Coaster - Hollywood Insider