As the town preps for Halloween, a high-scoring rival shakes things up at the arcade, and a skeptical Hopper inspects a field of rotting pumpkins.

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.

A frantic Jonathan looks for Nancy in the darkness, but Steve’s looking for her, too. Hopper and Joyce uncover the truth about the lab’s experiments.

Eleven struggles to reach Will, while Lucas warns that “the bad men are coming.” Nancy and Jonathan show the police what Jonathan caught on camera.

Lucas, Mike and Dustin try to talk to the girl they found in the woods. Hopper questions an anxious Joyce about an unsettling phone call.

An increasingly concerned Nancy looks for Barb and finds out what Jonathan’s been up to. Joyce is convinced Will is trying to talk to her.

Gordon enjoys success while Joe works to keep their web project afloat. Cameron extends a business trip. Donna launches a new venture.

Joe and Cameron talk on the phone. Donna promotes her assistant. Gordon’s business buckles under pressure from a larger competitor.

Cameron promotes her game at an industry conference. Donna squares off against old rivals. Gordon struggles to support Joe’s newest idea.

Cameron buys a plot of land to re-center. Joe and Gordon hire a team of websurfers to map the web. Donna focuses her team on the mission ahead.

Donna struggles with suspicion. Bosworth hits a breaking point. Joe confesses to Gordon while Cameron faces past mistakes.

Donna makes a play for a heavy hitter. Gordon confronts his daughter about an issue at school. Cameron finds a new fan. Joe sees a new side of Haley.