However, viewers were kept in the dark until season five's second batch of episodes, now streaming on Netflix.

On Christmas Day, Stranger Things fans finally discovered the series-long mystery of the Upside Down, an alternate dimension ...

After keeping us in the dark for almost 10 years, Stranger Things has finally revealed what the Upside Down actually is – and ...

This Stranger Things season 5 episode 6 recap covers huge revelations and escape attempts from Henry's mind prison.

We finally know what the Upside Down really is in Stranger Things — get details on the major reveal in Season 5, Volume 2.

With a giant evil spider monster, mysterious briefcase and a whole lot of teary characters bidding adieu, “Stranger Things” ...

Here's what time the "Stranger Things" Season 5 finale, a movie called "Rightside Up," releases on New Year's Eve.

Though the second part of the show's fifth season is being released Christmas night, the series finale won't be available to ...

After four-and-a-half seasons of questions prompted by “Stranger Things,” in Volume 2 of the show’s fifth and final season, ...

As Eleven prepares to face off against Vecna one last time, here are all the songs in the "Stranger Things" Season 5 finale ...

It's also the home of demons, so it makes a ton of sense that the Duffer Brothers would incorporate this into the final ...