This article contains spoilers for "Stranger Things" season 5, volume 1.

The endgame of "Stranger Things" has started, and the show certainly has a fair amount of plot threads to tie into neat little bows. Based on the hints that season 5, volume 1 is throwing at viewers, it intends to do so by using a very particular theme: time travel.

Apart from aliens and interstellar travel, time-traveling antics are just about the last major genre trope "Stranger Things" hasn't touched yet. Still, based on the several time-themed clues in each of season 5's first four episodes, there's definitely something timey-wimey afoot this go around.

It all starts in "Chapter One: The Crawl," where Mike Wheeler's (Finn Wolfhard) sister Holly (Nell Fisher) is seen reading Madeleine L'Engle's time travel-t

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