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A high-scoring rival shakes things up at the arcade while the town prepares for Halloween.

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On the way home, Dustin adopts a brand new pet.

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Jonathan, Nancy, and Joyce purge the virus from Will by overheating him in Hopper's cabin.

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Dustin attempts to contact Suzie, but he hears a Russian broadcast.

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The Mind Flayer is coming for Eleven because she was the one who closed the gate.

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In Hawkins, Mike and Dustin have joined their high school's "Hellfire Club".

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Harper is imprisoned in Russia, yet he doesn't give up the fight.

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Although Papa raised Eleven, he did not want to let her leave his lab.

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Lucas and Max made plans for a date, but we won't know until season 5.