Originally appeared on E! Online

One " Stranger Things " storyline detail is turning fans upside down.

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Indeed, eagle-eyed fans spotted that a flashback scene in volume one of the Netflix series’ fifth and final season does not align with an earlier telling of the same memory from season one.

In the season five look-back, Will Byers (played by Noah Schnapp ) and his older brother Jonathan ( Charlie Heaton ) build a fort in the woods named Castle Byers, a pivotal location in the debut season. During the flashback, the Byers brothers construct the fort in the sunshine during the day, which noticeably differed from Jonathan’s recollection of the events as told in season one.

“Do you remember the day D

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