Once the NX-01 finally returns to Earth, the weary crewmen face repercussions of their journeys, both positive and negative.

With time running out — and an assassin close behind — Hopper’s crew races back to Hawkins, where El and the kids are preparing for war.

With El and Max looking for Billy, Will declares a day without girls. Steve and Dustin go on a stakeout, and Joyce and Hopper return to Hawkins Lab.

Summer brings new jobs and budding romance. But the mood shifts when Dustin’s radio picks up a Russian broadcast, and Will senses something is wrong.

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

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.

An ailing Will opens up to Joyce — with disturbing results. While Hopper digs for the truth, Eleven unearths a surprising discovery.

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.

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.

Dr. Brenner holds Hopper and Joyce for questioning while the boys wait with Eleven in the gym. Back at Will’s, Nancy and Jonathan prepare for battle.

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.

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.

Hopper breaks into the lab while Nancy and Jonathan confront the force that took Will. The boys ask Mr. Clarke how to travel to another dimension.

Refusing to believe Will is dead, Joyce tries to connect with her son. The boys give Eleven a makeover. Nancy and Jonathan form an unlikely alliance.

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.

On his way home from a friend’s house, young Will sees something terrifying. Nearby, a sinister secret lurks in the depths of a government lab.

A violent denouement in the forest clears the Dora Lange case and turns Cohle and Hart into local heroes. Each man settles into a healthier rhythm of living as Hart…

Hart and Cohle hunt for their newly identified suspect, Reggie Ledoux, a meth cooker who shared a cell with Dora Lange’s husband and recently skipped parole. As Hart’s personal life…

A hidden image at the burned-out church leads Cohle and Hart to Joel Theriot, a tent-revival minister whose parishioners finger a scarred “tall man” seen with Dora Lange. Brought in…

Under pressure to land a suspect in the Lange murder, Quesada warns Hart and Cohle that they might be replaced by three detectives from a new task force. The pair…

Former Louisiana State CID partners Martin Hart and Rustin Cohle give separate statements to a pair of investigators about the murder of a prostitute, Dora Lange, 17 years earlier. As…