The Room Below (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

The Room Below follows a grieving mother whose life with a mysterious creature takes a darker turn after she befriends a boy to fill the place of her dead son. A retired detective’s investigation into the child’s disappearance threatens to expose the fragile world she has built.

The Room Below is a 2026 Australian horror thriller written and directed by Kurt Martin. The film centers on grief, a child’s disappearance and an unsettling presence hidden inside a mother’s home.

Starring Alyssa Sutherland as Mia, the 1-hour-40-minute film also features Jonathan Rhys Meyers, Goran D. Kleut, Lauren Grimson and Bobby Gilchrist. Its mystery unfolds as an investigation brings increasing pressure to a carefully maintained private world.

The Room Below movie details

Story without spoilers

Mia is a mother grieving the death of her son from cancer. Living with a mysterious creature in her home, she forms a bond with another boy in an attempt to replace the child she lost.

The situation becomes more dangerous when a retired detective investigates the boy’s disappearance. As his questions begin to challenge Mia’s version of reality, the boundaries of her constructed world start to come apart. The supplied premise establishes a supernatural mystery without revealing how the investigation ends.

What to expect

The film combines horror, thriller and mystery elements around a supernatural creature, a grieving parent and a missing child. Its central tension comes from the contrast between Mia’s private home life and the retired detective’s effort to uncover what happened.

The premise points to a story shaped by grief, concealment and psychological pressure, while the supernatural element gives the missing-person investigation an additional layer of uncertainty. Specific visual or tonal details are not provided in the supplied information.

Cast and creative team

Alyssa Sutherland leads the cast as Mia. Bobby Gilchrist plays Detective Frank Peterson, the retired detective investigating the child’s disappearance, while Goran D. Kleut appears as The Doctor, Lauren Grimson as Jazz, Gilbert Bradman as Simon Cooper and Tristan McKinnon as William Cooper. Jonathan Rhys Meyers is also part of the cast, with no character name supplied.

Kurt Martin serves as both director and writer, giving the film a single credited creative lead behind its story and direction.

• Alyssa Sutherland as Mia
• Jonathan Rhys Meyers
• Goran D. Kleut as The Doctor
• Lauren Grimson as Jazz
• Gilbert Bradman as Simon Cooper
• Bobby Gilchrist as Detective Frank Peterson
• Tristan McKinnon as William Cooper

Release and production context

The Room Below is listed as a 2026 release from Australia, with a release date of September 1, 2026. It runs for 1 hour and 40 minutes and is in English. Production companies credited are Lunar Pictures, Tetrad Studios, Hooligan Dreamers, Screen NSW and Create NSW.

Production companies: Lunar Pictures, Tetrad Studios, Hooligan Dreamers, Screen NSW, Create NSW

The Room Below official trailer

Watch the official trailer on YouTube

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With its combination of supernatural horror, investigative mystery and a story rooted in maternal grief, The Room Below is positioned as a compact genre film built around an increasingly unstable secret. The supplied details leave the creature’s nature and the investigation’s outcome open, keeping the focus on the film’s unsettling premise.

Film data:
TMDB · IMDb