Stranger Things creators Matt and Ross Duffer have admitted that they already know how the Netflix series goes to finish – and that they have done for quite a while .

These days, if TV shows end up to be popular, it isn’t unusual for them to continue on and on until someone, somewhere is forced to tug the plug. Writers and showrunners raise plots as they are going , enabling the series to hold on and pull in ratings.

That’s not the case with Stranger Things, though, because the Duffer Brothers have recently explained.

“We like to look at each season as kind of its own complete story,” Matt told Deadline. “We do have a pretty large mythology […] and season by season, we’re turning the page and revealing a little bit more and more.

“So we do have a general sense of where we’re going. We’ve known the ending of the show for quite a while.”

He continued: “I mean, the honest truth is, we didn’t know if we would go beyond season one. So we liked the idea that season one could function as its own standalone limited series, but it had the potential to go beyond that.

“But yeah, we have an ending in mind, we don’t want to keep churning it out.”

While the first two seasons of Stranger Things took place in autumn and winter, its third instalment – which saw Eleven (Millie Bobby Brown) and co stop a Mind Flayer-possessed Billy from taking over Hawkins, while also thwarting a sinister Russian agency from re-opening the portal to the Upside Down – took place in summer 1985.

It concluded with Eleven tagging along with Joyce Byers (Winona Ryder) and her sons Jonathan (Charlie Heaton) and Will (Noah Schnapp), as they moved away from town in the wake of Jim Hopper’s supposed death.

More recently, a teaser for the sci-fi horror’s fourth season has revealed that Hopper (David Harbour) is still alive, and is being held captive in a Russian prison.