Horror Mystery Science Fiction

See how far it goes.

Backrooms (2026)

Runtime 111 min

Release date 27/05/2026

Country United States of America, Canada

Production

Atomic Monster

21 Laps Entertainment

A24

Phobos

The North Road Company

Overview

A strange doorway appears in the basement of a furniture showroom.

Directors & Screenwriters

Kane Parsons

Director

Cast

Chiwetel Ejiofor

as Clark

Renate Reinsve

as Mary

Finn Bennett

as Bobby

Lukita Maxwell

as Kat

Mark Duplass

as Phil

Avan Jogia

as Naren Warne

Robert Bobroczkyi

as Pirate Clark

Ember Ambrose

as Young Mary

Krista Kosonen

as Nora

Philip Granger

as Meterman

Katharine Isabelle

as Robin

Peter New

as Big Wayne

Sarah Hayward

as Nurse

Natalie Moon

as Phil's Wife

Calix Fraser

as Phil's Child

Sawyer Fraser

as Phil's Child

Patrick Baynham

as Bearded Still Life

Rhiannon Roberts

as Redheaded Still Life

Dana Mahmood

as Archibald Leland Sutter Still Life

Matthew Patrick Savage

as Homeless Man

Ramona Kim

as Party Attendant Mother

Milana Wan

as Party Attendant Daughter

Kelly Craig

as Barbara

Mel Kostas

as Rival Customer

All trailers

Horror Mystery Science Fiction

Backrooms

Official Promo

Video: YouTube
Duration: 00:16

Horror Mystery Science Fiction

Backrooms

Official Promo

Video: YouTube
Duration: 01:07

Horror Mystery Science Fiction

Backrooms

Official Trailer

Video: YouTube
Duration: 02:18

Horror Mystery Science Fiction

Backrooms

Official Teaser

Video: YouTube
Duration: 01:01

Did You Know?

From a $10 million indie horror to a $394 million global smash, Backrooms is finally streaming on HBO Max.

Backrooms has shattered expectations, pulling in $394 million worldwide and becoming A24’s highest‑grossing film ever—outpacing even Oscar‑nominated Marty Supreme. The low‑budget horror, produced for under $10 million, earned an 87% Certified Fresh rating on Rotten Tomatoes, proving that a creator‑driven vision can stand toe‑to‑toe with blockbuster franchises. The film expands the viral YouTube series that made Kane Parsons a household name among horror fans. It follows a beleaguered furniture store owner, Clark (Chiwetel Ejiofor), who uncovers a portal to an endless maze of liminal spaces beneath his shop. When he disappears, his therapist Mary (Renate Reinsve) ventures into the unsettling Backrooms to rescue him, navigating twisted corridors that warp reality itself. Supporting performances from Mark Duplass, Finn Bennett and Lukita Maxwell round out the psychological thriller, scripted by Will Soodik. After a theatrical run that defied every forecast, Backrooms will debut on HBO Max on September 25, just four months after its cinema launch. The streaming release promises to broaden its audience even further, cementing the movie’s status as one of the year’s most remarkable horror success stories and a testament to the power of online creators reshaping the genre.

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