How 'Stranger Things: The First Shadow' expands mythology

The cast and crew of 'Stranger Things: The First Shadow' explain how the stage play is expanding the world of the Upside Down ahead of season 5.

Summary of The First Shadow : r/StrangerThings

The Upside Down, Stranger Things Wiki

Interview in The Guardian/Observer with the Duffers : r/StrangerThings

Stranger Things: The First Shadow

Netflix's 'Stranger Things' prequel play to debut in London - Los

Nerds, assemble! 'Stranger Things' is coming back — as a London

How 'Stranger Things: The First Shadow' expands mythology

Stranger Things' Mythology Explained

Stranger Things Season 4: Inside Netflix, Duffer Brothers' Strategy

Stranger Things - Wikipedia

Stranger Things (Series) - TV Tropes

Stranger Things: The First Shadow – First Look Rehearsal Photos