Netflix's "Stranger Things" was a massive hit in 2016, and the Duffer Brothers-created series will return for a second season this year, titled "Stranger Things 2." The first official trailer of season of "Stranger Things" debuted today during the Super Bowl, as well as the 2017 premiere date of Halloween.

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The first season of "Stranger Things" took place during 1983 in the small town of Hawkins, Indiana, where the friends and family of missing child Will Byers discovered the hidden secrets of their small town. The original cast is set to return, as well as new additions Sean Astin ("Lord of the Rings,") Paul Reiser ("Mad About You,") Dacre Montgomery ("Power Rangers,") and Sadie Sink ("American Odyssey.")

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The first images from "Stranger Things 2" debuted earlier this week, which showed Dustin, Mike, and Lucas sporting Ghostbusters gear. While no official synopsis has been released, the trailer above does show the return of Eleven and the rise of a new and much larger Demogorgon.

"Stranger Things 2" will drop October 31, exclusively on Netflix.