Horror fans shared their fears of suffering ‘nightmares for weeks’ after a trailer dropped for a new film based on an unnerving urban legend.

Inspired by a 4Chan post, Backrooms follows a furniture store owner named Clark, played by Chiwetel Ejiofor.

The trailer – which has racked up over 18 million views on YouTube – shows Clark discovering a backroom in his shop that he had been unaware of.

Upon investigating with his friends, Clark also opens up to his therapist about the unusual rooms, as they multiply and break the laws of physics.

In an effort to prove the rooms’ existence, Clark and his friends attempt to video tape their findings.

Although things soon take a turn for the worst after discovering something dangerous living within the space.

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Horror fans shared their unease and fear of ‘nightmares for weeks’ after a trailer for a new film dropped

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Taking to the comments section, viewers soon shared their unease after watching the trailer.

One wrote: ‘Bro I will have many nightmares of this but it will be worth it.’

Another added: ‘I’m going to have nightmares for weeks, it’s gna be awesome.’

A third penned: ‘The fact that they are not only keeping the VHS aesthetic, but also the soundtrack from the webseries tells me this is going to be pure peak.’

Psychological sci-fi horror Backrooms is based upon the semi-anthological web series of the same name by Kane Parsons.

Parsons wrote, produced and directed the original iteration, while also returning to direct the movie.

In addition to Oscar nominee Chiwetel, 48, the cast also includes Mark Duplass, Finn Bennett, Renate Reinsve, Avan Jogia and Lukita Maxwell.

The premise was inspired by a 2019 post on the infamous forum 4Chan – namely, its paranormal-themed board /x/.

Meanwhile, the post in question included a photo of a sinister, empty space decorated in lurid pastel yellow wallpaper, beige carpets and with fluorescent lighting.

It comes as a horror series branded a ‘true hidden gem’ boasting a perfect 100% Rotten Tomatoes score is now streaming for free on ITVX.

The Devil’s Hour – which has just launched on the streamer – stars Jessica Raine and Peter Capaldi in leading roles.

Tom Moran created the psychological thriller, which follows social worker Lucy (Raine), who faces torment from horrifying nightmares at 3:33am each night.

In fact, this is the titular ‘devil’s hour’, traditionally known as a time where supernatural beings are at their most powerful.

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Tom Moran created the psychological thriller, which follows social worker Lucy (Raine), who faces torment from horrifying nightmares at 3:33am each night

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The Devil’s Hour debuted on Prime Video back in 2022 and has aired two series so far, with a third to come

Former Doctor Who star Capaldi, 67, portrays the mysterious criminal Gideon Shepherd.

The Devil’s Hour debuted on Prime Video back in 2022 and has aired two series so far, with a third to come.

Proving its acclaim, the show has nabbed an impressive 100% score on review aggregator site Rotten Tomatoes.

Meanwhile, Metro described the programme as the ‘best British horror series in decades’ in their four-star write up.

One viewer wrote online: ‘For my money it was Jessica Raine who stole the show and made the whole thing so watchable.’

Another penned: ‘While everyone obsesses over big-budget franchises, The Devil’s Hour quietly delivers smarter storytelling and a darker emotional punch.

‘Capaldi’s portrayal of Gideon is the kind of layered, unsettling performance that sticks with you long after the credits roll.

‘It’s eerie, thought-provoking, and far more inventive than most of what’s on TV right now- a true hidden gem that deserves mainstream love.’