Eleven makes plans to finish what she started while the survivors turn up the heat on the monstrous force that’s holding Will hostage.

Will’s connection to a shadowy evil grows stronger, but no one’s quite sure how to stop it. Elsewhere, Dustin and Steve forge an unlikely bond.

Nancy and Jonathan swap conspiracy theories with a new ally as Eleven searches for someone from her past. “Bob the Brain” tackles a difficult problem.

After Will sees something terrible on trick-or-treat night, Mike wonders whether Eleven’s still out there. Nancy wrestles with the truth about Barb.