Natalia Dyer, Charlie Heaton, Joe Keery and Brett Gelman dissect a major new development, with insight from David Harbour and Shannon Purser. ...

Joe Keery joins Shawn Levy, Gaten Matarazzo and the Duffer Brothers to shed light on Steve's evolution and the season's most surprising partnership. ...

Terror reigns in the food court when the Mind Flayer comes to collect. But down below, in the dark, the future of the world is at stake. ...

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. ...

Dr. Alexei reveals what the Russians have been building, and Eleven sees where Billy has been. Dustin and Erica stage a daring rescue. ...

Strange surprises lurk inside an old farmhouse and deep beneath the Starcourt Mall. Meanwhile, the Mind Flayer is gathering strength. ...

A code red brings the gang back together to face a frighteningly familiar evil. Karen urges Nancy to keep digging, and Robin finds a useful map. ...

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. ...

Nancy and Jonathan follow a lead, Steve and Robin sign on to a secret mission, and Max and Eleven go shopping. A rattled Billy has troubling visions. ...

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

The Demogorgons invade the laboratory killing everybody inside and Joyce sedates Will that is connected and giving information to them. There is a blackout locking the la ...

Psychic visions draw Eleven to a band of violent outcasts and an angry girl with a shadowy past. ...

Will is sent to the hospital in the Hawkins Laboratory but the doctors can not find a reason for his pain. Murray makes many copies of the tape to send to the newspapers. ...

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. ...

Dustin finds a slug in his garbage and believes it is a pollywog. He calls the creature Dart and becomes obsessed with it. Bob tells Will that he had nightmares in the pa ...

Eleven recalls how she escaped from the Upside Down and met Hopper. She asks him if she can dress like a ghost to go trick-or-treating but Hopper tells her that it would ...

Near Halloween, Mike, Dustin, Lucas and Will find that Dustin's score in an Arcade game has been beaten by someone with the nickname MadMax. They believe the newcomer in ...

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. ...

Season finale. After losing yet another key witness in the Las Hormigas Cartel investigation, Cullen is forced to deal with the consequences... and FBI agent Dustin Kaspr ...