Stranger Things 4's emotional Will and Jonathan scene was not originally in the script - PopBuzz

It was only until after I did the scene of me in the vanthe protectiveness that you see with Jonathan looking in the rearview mirror. They were like, we need a scene with that. So they wrote it as we were filming.

Stranger Things Season 4 Improvised Moments

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

Official Script of the Jonathan and Will talk in Season 4 courtesy of the writers : r/StrangerThings

Stranger Things Season 4 Improvised Moments

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Stranger Things Season 4 Improvised Moments

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Stranger Things star confirms one of season 4's most moving scenes wasn't in the script