Wednesday, June 24, 2026

The Liminal Space of Sound: undertone (2026) Review

Director: Ian Tuason

Notable Cast: Nina Kiri, Adam DiMarco, Keana Bastidas, Jeff Yung, Michele Duquet

 

As the genre of ‘liminal space horror’ starts to take the world by storm, not just as an independent horror movement artistically, but also powered most recently by the box office juggernaut of Backrooms, it's necessary to remember that the concept is not new to the horror genre overall. Empty spaces, lost items, and the hanging existential dread of the terrors to come are all tactics horror has used since the beginning. It’s just that so many modern filmmakers and storytellers are using it in a modern lens that is both fascinating and certainly relevant to the time, and they’re doing it with conviction. Example films like Skinamarink or the earlier films of Osgood Perkins (check out I Am the Pretty Thing that Lives in the House) laid a lot of the groundwork for where we are in 2026, so it's not like this movement is even all that new, comparatively speaking. 

 

It’s this conviction and modern lens that make a film like Undertone so diabolically effective. Director Ian Tuason is playing in the same space as many other liminal horror films, but his intention is not only the physical space in the film, but also the auditory space that often creates a sense of dread and impending doom. As the saying goes, it's the things that are unspoken or unheard that are often the most powerful. Undertone intends to weaponize those and does an impeccable job at it while crafting a film that makes sound the most important aspect, in all its choices. 

 

However, sound isn’t the only thing being layered in the film to create atmosphere. For Undertone’s lead character, Evy, played by Nina Kiri, understanding silence is part of her life, and the film feels utterly isolating as a result. She is staying in her mother’s house, a caretaker for her dying mother, who has now fully stopped eating and speaking, and simply lies in bed. She spends so much of her time alone, waiting at her mother’s bedside, and even when she goes out, it feels like a betrayal, and when she goes to see her ‘boyfriend’ at a party one night, she only comes home to find her mother on the floor. Not only does Evy feel isolated, but the film also wants its audience to feel that way. The style and narrative intentionally separate the audience from other people. A nurse is never shown, only heard as the film focuses on Evy’s face, and her communication with her significant other is only via phone, and it seems very distant.

 


Her isolation is only made more relevant as the setting becomes its own prison and echo chamber. The film never leaves the house, physically, and it uses it as a megaphone for its auditory liminal horror and as a conceptual prison for Evy. It’s her mother’s house, and there are echoes of a life that used to be lived. There is a TV that never turns on, stairs that no longer creak, a house full of knick-knacks that don’t move, and a home that no longer feels lived in as much as it exists waiting to find its end, as sad as it might be. The audience sees very little of the house, and while the finale certainly makes use of its limited space by revealing possibly unseen changes that make the house even more unsettling and aggressive, it spends most of its time allowing that space to suffocate Evy and its audience. Everything seems tight, the ticking of the clock on the way is a reminder of the emptiness, and small changes seem masterfully malicious. A light that turns on, shadows that feel too deep, or a living room that feels too empty as Evy listens to recordings and old children’s songs - more on that in a second - all make the house feel like its own oppressive entity, and it adds a lot of layers to its narrative in subtle ways. Religious artifacts, visages of the Mother Mary, and even the oddly stylized staircase just add to the film's atmosphere, which feels far more sinister the longer you simply exist in it. 

 

Nina Kiri does an admirable job as essentially the film's sole actor, carrying its sadness, angst, and terror as she goes. She essentially has to react only to sounds, and that’s not always an easy task for an actor. Her main co-star is her podcast co-host, Justin, voiced by Adam DiMarco, who also gives quite the performance in the film as the one who tends to believe in the supernatural. Together, they co-host their paranormal discussion and investigation podcast, which drives the main plot. Justin lives in London, so Evy records with him at 3:00 AM. Their latest episode concerns an anonymous email containing 10 sound files, and they plan to listen to it live as they record, capturing their most honest reactions. 

 


There are a ton of horror films that use this plot structure, in which characters uncover a story told in chunks and then try to unravel it to see how it reflects on their own predicament. Sinister, for example, does it with home movies and does it fairly well. Reactions and comments to the film being wholly ‘unoriginal’ may not be far from the truth, but the manner in which Undertone manages its structure is still effective. As Evy and Justin listen to each file, uncovering a story about an expecting couple, Jessa and Mike, the film uses it to create a meta relationship with its audience. Like how Justin will hear something and try to get Evy to recognize it, the film is training us how to listen to it - where to look for sounds, to not breathe in the silence, and listen for the…you guessed it, undertone. 

 

As the story progresses, the addition of a possibly demonic entity passed down uses a lot of children’s lore to get there, adding another intriguing layer to the relationship between adults and children, between parents and their offspring. Again, the visages of the Mother Mary play strongly here, but the film adds in lots around children’s songs and lullabies - particularly those played backward or how the messages in their often cryptic lyrics are meant to be interpreted, and it makes for an interesting investigation around the tension and anxieties of motherhood. While more exploration of these themes would certainly lean into spoiler territory for this review, which is not my full intention here, it’s safe to say that like so many modern horror films from the current generation of filmmakers, Undertone has a lot to say about the tension and possibly horrific results around the parent and child dynamic, and it's a welcome addition to the rest of the film’s narrative and stylistic choices. 

 

Undertone has often been written off by horror fans as "unoriginal" and "slow," but the execution of palpable tension, subtle stylistic visuals, and one of the most impressive sound designs in any modern film makes it a low-key, anxiety-inducing banger. The experience I had watching it totally knotted up my stomach and had me intently listening and looking in every corner so hard my ears and eyes hurt by the end. While Tuason certainly manages to take a fairly run-of-the-mill horror plot and execute it hauntingly well, the greatest feat is how the film ties it all together. It’s sound design or the choices it makes in its production, the manner in which Evy interacts with the people around her and her environment, the heavier thematic elements in the relationship of mother and child, or even just its plot about technology and recordings are all tied together to one question that hangs in the air for the audience long after the story finishes... 

 

Are you listening yet?

 


Written By Matt Malpica Reifschneider

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