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Millie Bobby Brown in 'Stranger Things' Season 4.

Stranger Things Revealed When Season 4 Will Premiere And Its Episode Titles

Every single episode title is so creepy!

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Netflix

After three years, Stranger Things managed to shock viewers with its Season 3 finale. Instead of yet another set of unnerving adventures in the Upside Down, the show took a hard left and had Joyce Byers pack up her family (and Eleven) and leave Hawkins for good. On the one hand, it was a practical solution after the heartache she suffered in losing both Bob and Hopper. On the other, it left fans wondering: Where does the show go from here? With Stranger Things Season 4 confirmed, fans are desperate to know what's next.

Season 3 gave fans many of the things they'd hoped for, including an almost-romance with Joyce and Hopper. But their potential partnership was derailed in the final episode when Hopper sacrificed himself to close the hole to the Upside Down created by the Russians under Starcourt Mall.

As Joyce, Jonathan, Will, and Eleven left town at the very end of the season, the credits rolled. But the show wasn't over. In a post-credits sequence, viewers found themselves in a Russian military base, where a new hole to the Upside Down was being tested. As the soldiers walked by a cell, they discussed "The American" inside. This led to a huge fan theory that Hopper had survived the Starcourt blast, only to be rescued out of the Upside Down by USSR scientists in Kamchatka, an isolated peninsula in Russia's far east region.

It's since been confirmed that Hopper is, in fact, still alive. But that doesn't have fans any less eager to uncover deets about the new season. Plus, the new castings for Season 4 also suggests that Hopper isn’t the only focus for the new season.

Here's everything we know so far:

Stranger Things 4 Trailer

Netflix released a brief and cryptic sneak peek at Season 4 during its TUDUM event on Sept. 25. The creepy teaser trailer is all about the mysterious Creel House. The haunted house was once owned by a seemingly picture-perfect family in the ‘50s, but the Stranger Things crew will explore it after its been abandoned for what looks to be decades.

Stranger Things 4 Teasers

On Aug. 6, 2021 a new “sneak peek” teaser with brand-new footage finally arrived. There are glimpses of a creepy clock, the gang investigating in a dark hallway, an amusement park, high school cheerleading, and Eleven (who has bangs now!) being held back by some men in black. The clip also finally confirmed that Season 4 will return in 2022.

Stranger Things previously released three teasers for Season 4, plus one "behind-the-scenes" glimpse:

The first came on Sept. 30, 2019, when Netflix announced an overarching deal with the Duffer Brothers. As part of that deal, Season 4 was a go. That said, there wasn't much in the way of details in the teaser.

The second one came on Feb. 14, 2020. Call it a love letter of sorts, the video clip showed fans that filming on the new season had begun. It also confirmed what most fans had guessed: Hopper was "The American," and life on the Kamchatka peninsula is rough.

Two weeks later, fans got a look at the cast coming together for the season's first table read. Note David Harbour's shaved head, indicating filming for his scenes had already begun.

After a long, pandemic-related delay, another Season 4 teaser turned up on May 6, 2021, called "Eleven, are you listening?" Is it a flashback? A dream? A nightmare? Or has Eleven been recaptured by her Papa now that Hopper is gone?

Netflix released its longest teaser for the new season yet on its Stranger Things Day on Nov. 6. The teaser picks up after Eleven and Will’s move to California at the end of Season 3, showing how Eleven hasn’t exactly had the best adjustment to her new school. In the clip, Eleven talks about looking forward to spring break, which immediately cuts to tons of explosions and chaos.

Stranger Things 4 Cast

Ken Woroner/Netflix

Who's Back:

Stranger Things has been slowly expanding the cast beyond the show's first season core of Finn Wolfhard, Gaten Matarazzo, and Caleb McLaughlin as Mike, Dustin, and Lucas. Millie Bobby Brown was supposed to only last one season as Eleven, but the writers changed their minds and kept her in the story. Noah Schnapp went from recurring actor to main cast member in Season 2 as Will Byers, which is when the show also added Sadie Sink as Max. All five stars are back for Season 4.

Also returning this season: Winona Ryder as Will's mom Joyce Byers and Charlie Heaton as her older son Jonathan. Natalia Dyer will return as Mike's older sister, Nancy, and Cara Buono is back as their mom, Karen. Priah Ferguson was promoted to series regular for the new season, so she'll be back as Lucas' little sister Erica. Brett Gelman also got the series-regular upgrade, so Murray Bauman will be back too.

Joe Keery and Maya Hawke are also returning as BFFs Steve Harrington and Robin Buckley. And of course, as mentioned above, David Harbour is back as Chief Hopper.

New Faces:

According to Deadline, new series regulars for Season 4 include Jamie Campbell Bower (Sweeney Todd), Eduardo Franco (Booksmart), and Joseph Quinn (Catherine the Great). Netflix added to that list on June 9, 2021, as part of "Geeked Week" with an announcement Amybeth McNulty, star of the streamer's recently canceled Anne With An E, will be joining the series as Vickie, a brand-new nerd for the gang and potential love interest.

Along with McNulty, Netflix revealed a few more new students fans would meet at Hawkins High, including Black Lightning's Myles Truitt as Hawkins basketball star Patrick, The Village's Grace Van Dien as Chrissy, Hawkins High's lead cheerleader, and Regina Ting Chen (Queen of the South) will play Ms. Kelly, a popular guidance counselor.

Season 4 will also add Tom Wlaschiha (Jaqen H'ghar from Game of Thrones), who will play an as-yet-unnamed Soviet soldier, and horror icon Robert Englund (A Nightmare on Elm Street).

Other new faces will include Sherman Augustus (Westworld), Mason Dye (The Goldbergs), and Nikola Djuricko (Genius), all of whom play undisclosed roles.

Stranger Things 4 Plot Details

Netflix

Fans don't have a lot of confirmed plot details other than Hopper being alive and in Russia. But based on the show's history, there are a few things fans can count on:

Stranger Things has been covering one season per year, which means Season 4 will likely take place in 1986. That gives a twist to Hopper's being in Russia. On Saturday, April 26, 1986, the No. 4 reactor at the Chernobyl Nuclear Power Plant melted down, and it was one of the biggest disasters in modern history. How that figures into the series (if at all) remains to be seen. Chernobyl is 4,541 miles from the Kamchatka peninsula, but that's real-world miles. As far as the Upside Down is concerned, it could be next door.

Speaking of Hopper, Harbour has given a few hints about what's to come. In an interview, he reminded fans of a scene in Season 2, in which Eleven finds boxes of Hopper's history labeled "Dad," "Vietnam," and "New York." Harbour promised those boxes are not a throwaway detail, although how Hopper's past will come into play is still a mystery.

Stranger Things 4 Episode Titles

Netflix unveiled the nine episode titles that will make up Season 4 on Nov. 6. A couple stand out as referencing important characters, like “Dear Billy,” a nod to Max’s violent brother, and “Papa,” which is the name Eleven used for Dr. Brenner.

1. “The Hellfire Club”

2. “Vecna’s Curse”

3. “The Monster and The Superhero”

4. “Dear Billy”

5. “The Nina Project”

6. “The Dive”

7. “The Massacre At Hawkins Lab”

8. “Papa”

9. “The Piggyback”

Stranger Things 4 Theories

Netflix

With little to go on, there aren't many theories so far. The premiere’s title, "The Hellfire Club," has some fans speculating about a comic book angle featuring the X-Men and perhaps a plotline involving mutant powers. But so far, there's nothing to prove it one way or the other.

The most prevalent theory revolves around Hopper and how his imprisonment in Russia will play out. Based on Harbour's mention of how his character takes a dark turn this time around, fans think he might be this season's villain. Could Russia send him home to act as a sleeper agent, Manchurian Candidate-style? Or could it be something worse?

Stranger Things 4 Premiere Date

Netflix

The Aug. 6 Stranger Things teaser revealed Season 4 will premiere sometime in 2022, but didn’t get any more specific than that. On Nov. 6, Netflix narrowed the release window down to Summer 2022 in its episode titles reveal video. There’s still no exact date, but at least now fans know more Stranger Things is on the way next summer.