Undertone: A Supernatural Horror Masterpiece Terrifying Audiences with Minimalist Sound Design

Jakarta, CNN Indonesia – Released in 2025, Undertone, a Canadian supernatural horror film, has rapidly garnered critical acclaim and captivated audiences worldwide by masterfully employing an extreme and minimalist sound design to instill terror. The film, which features a compelling lead performance by Nina Kiri, stands as a testament to the power of psychological dread over conventional jump scares, leveraging silence, static, and the unsettling phenomenon of apophenia to create an immersive and deeply disturbing experience. Its unique approach to horror, coupled with a poignant narrative rooted in personal experience, has positioned Undertone as a significant entry in the contemporary horror landscape, earning it prestigious awards and global distribution through A24.

The Genesis of Terror: A Story Born from Isolation

At its core, Undertone tells the story of Evy (Nina Kiri), a pragmatic and skeptical host of a paranormal podcast. Her world, typically focused on debunking supernatural claims, is irrevocably altered when she returns to her childhood home to care for her ailing, terminally ill mother. This familial obligation plunges her into a period of profound isolation and emotional vulnerability, setting the stage for the encroaching horror.

The narrative intensifies when Evy and her podcast co-host, Justin (Adam DiMarco), receive an anonymous audio submission. The recording, purportedly from a married couple experiencing inexplicable disturbances in their home, initially presents as a collection of mundane, odd noises. However, as Evy, with her trained ear and analytical mind, delves deeper into the sonic tapestry, she begins to uncover disturbing hidden messages. These messages, fragmented and chilling, seem to point towards an ancient demonic entity, deeply embedded in forgotten folklore and dark legends.

As Evy becomes increasingly engrossed in the mysterious recordings, the boundaries between her objective reality and creeping hallucination begin to blur. She finds herself haunted by a cacophony of terrifying sounds, experiencing bizarre and unsettling occurrences within the confines of her own home. The film masterfully depicts her gradual descent into a waking nightmare, where the lines between what is real and what is imagined become indistinguishable. This psychological torment is subtly interwoven with themes of pregnancy, mortality, and a sinister ancient curse, suggesting a deeper, more personal connection to the unfolding terror. Ultimately, as the terrifying truth behind the cryptic recordings is unveiled, Evy is forced to confront a malevolent force that threatens not only her own sanity and existence but also the lives of those closest to her.

A Symphony of Silence and Dread: The Art of Minimalist Sound Design

What truly sets Undertone apart in the crowded horror genre is its groundbreaking use of sound design. Directed and written by Ian Tuason, the film deliberately eschews overt visual gore and relies instead on an auditory landscape to conjure fear. Throughout its runtime, Undertone notably features a minimalist cast, primarily focusing on Nina Kiri as Evy, with her mother largely unseen or heard only indirectly. This limited focus heightens the sense of isolation and claustrophobia, making the auditory assault even more potent.

Tuason and his sound design team employ a meticulous approach, utilizing prolonged periods of unsettling silence punctuated by sudden, jarring bursts of static, distorted whispers, and barely perceptible ambient noises. This technique exploits apophenia, a psychological phenomenon where individuals tend to perceive meaningful connections or patterns in random or unrelated data. In Undertone, random static or environmental sounds are subtly manipulated to suggest voices, footsteps, or other malevolent presences, tricking the audience’s minds into creating their own horrors. The film understands that what the audience imagines in the silence, prompted by subtle auditory cues, can be far more terrifying than any explicit visual.

The film’s dedication to this auditory terror creates an atmosphere of pervasive dread. It’s a slow-burn horror that seeps into the viewer’s subconscious, making them question every creak, every rustle, every unexpected sound long after the credits roll. Critics have lauded this approach as a refreshing and profoundly effective method of re-engaging with the psychological roots of horror, proving that fear can be cultivated through suggestion and the manipulation of perception rather than overt shock tactics.

The Visionary Behind the Lens: Ian Tuason’s Personal Journey

Undertone marks the impressive feature film debut of Canadian director and screenwriter Ian Tuason. A true independent spirit, Tuason not only helmed the project but also penned the intricate screenplay, weaving a narrative that resonates with deeply personal experiences. According to reports from the Sundance Institute, Tuason openly revealed that the inspiration for Undertone stemmed directly from his own challenging experience of caring for his parents during the tumultuous period of the COVID-19 pandemic.

This personal connection imbued the film with an authentic layer of emotional depth, allowing Tuason to explore themes of isolation, the psychological strain of caregiving, the fear of loss, and the subtle, often unseen, horrors that can manifest within domestic confines. His journey mirrors Evy’s in some ways, creating a palpable sense of empathy and authenticity in the portrayal of her vulnerability and escalating terror. The film, therefore, transcends typical genre fare by grounding its supernatural elements in very human and relatable anxieties. Tuason’s ability to translate such a personal and emotionally charged experience into a compelling and terrifying horror narrative is a testament to his burgeoning talent and artistic vision. This background context is crucial for understanding the film’s nuanced portrayal of dread and its departure from conventional horror tropes.

A Chronology of Acclaim: From Festival Darling to Global Phenomenon

The journey of Undertone from an independent Canadian production to a globally recognized horror sensation is a compelling narrative of its own, marked by a series of significant milestones:

• 2025 – Fantasia International Film Festival Premiere: Undertone made its highly anticipated world premiere at the renowned Fantasia International Film Festival in Montreal, Canada. This prestigious festival, celebrated for its focus on genre cinema, proved to be the perfect launching pad for Tuason’s unique vision. The film immediately resonated with audiences and critics alike, standing out for its innovative approach to horror.
• 2025 – Audience Award for Best Canadian Feature: Following its premiere, Undertone quickly garnered its first major accolade, winning the Audience Award for Best Canadian Feature at the Fantasia International Film Festival. This victory was a strong indicator of the film’s ability to connect deeply with viewers and solidified its status as a must-see independent horror film. The audience’s enthusiastic reception underscored the effectiveness of its minimalist terror and psychological depth.
• Late 2025 – A24 Acquisition: The critical buzz and audience success at Fantasia did not go unnoticed by major distributors. In a significant turning point for the film, the esteemed independent entertainment company A24 acquired the global distribution rights for Undertone. A24’s reputation for championing distinctive, high-quality, and often unconventional horror films (such as Hereditary, The Witch, Midsommar, and Talk to Me) immediately elevated Undertone‘s profile, signaling its artistic merit and commercial potential to a wider industry audience. This acquisition was a strong endorsement of Tuason’s directorial debut.
• March 2026 – Global Distribution: Following the A24 acquisition, Undertone began its global distribution rollout in March 2026, reaching audiences far beyond its festival origins. This widespread release allowed a broader spectrum of viewers to experience its unique brand of terror.
• January 2026 – Sundance Film Festival Selection: Prior to its global release, Undertone received further prestigious recognition by being officially selected for the Sundance Film Festival 2026. It was featured in the highly sought-after Midnights category, a program specifically curated for films that push the boundaries of genre, offering intense, thrilling, and often experimental cinematic experiences. Its inclusion in Sundance further cemented its status as a critically acclaimed and artistically significant work.
• Current – Streaming on Netflix: Demonstrating its widespread appeal and accessibility, Undertone is now available for streaming on Netflix, allowing a massive global audience to discover its chilling narrative and groundbreaking sound design. Its presence on such a prominent platform underscores its journey from an indie darling to a mainstream horror success.

This chronological progression highlights Undertone‘s rapid ascent, driven by critical praise, audience enthusiasm, and strategic distribution, cementing its place as one of the most talked-about horror films of its release year.

Critical Acclaim and Industry Impact

The critical reception for Undertone has been overwhelmingly positive, with many critics hailing it as a refreshing and innovative entry into the horror genre. Reviews consistently praise Ian Tuason’s masterful direction and screenplay, particularly his audacious decision to lean almost entirely on sound design to generate fear. Film critics have noted the film’s ability to create an atmosphere of suffocating dread, transforming mundane sounds into harbingers of terror. "Tuason has crafted a slow-burn masterpiece that understands the true power of what isn’t seen, but deeply felt," remarked one prominent film critic. "It’s a chilling exercise in psychological manipulation, where the audience becomes an unwilling participant in Evy’s descent."

Nina Kiri’s performance as Evy has also received widespread commendation. Her portrayal of a skeptical podcaster gradually unraveling under the weight of unseen forces is described as nuanced and deeply affecting, carrying the emotional core of the film almost single-handedly. Her ability to convey mounting terror and paranoia through subtle expressions and body language, often reacting to sounds that the audience can only infer, is central to the film’s success.

The acquisition by A24 is perhaps the strongest indicator of Undertone‘s industry impact. Known for its discerning taste in original and often genre-bending cinema, A24’s backing signifies a strong belief in the film’s artistic integrity and its potential to resonate with a global audience. This partnership has undoubtedly broadened the film’s reach and cemented its reputation as a significant cultural product. Furthermore, its selection for the Sundance Film Festival’s Midnights program is a testament to its quality and its ability to challenge and redefine genre conventions, placing it among a curated selection of bold and experimental cinematic works.

Broader Implications for the Horror Genre and Independent Cinema

Undertone‘s success carries significant implications for the future of the horror genre and independent cinema as a whole:

• Redefining Horror Conventions: The film’s minimalist approach to terror, prioritizing psychological dread and innovative sound design over overt violence or jump scares, challenges conventional horror tropes. It demonstrates that effective horror can be achieved through subtle manipulation of atmosphere and perception, potentially inspiring other filmmakers to explore similar avenues and push the boundaries of the genre. This shift could lead to a new wave of more introspective and psychologically nuanced horror films.
• The Power of Sound in Filmmaking: Undertone serves as a powerful case study for the often-underestimated role of sound in cinematic storytelling. By making sound the primary vehicle for terror, the film highlights its immense potential to shape audience experience, build tension, and evoke profound emotional responses. It may prompt a renewed focus on sound design as a critical artistic element in filmmaking, particularly within the horror genre.
• Spotlight on Independent Canadian Cinema: As an independent Canadian production that achieved global recognition, Undertone shines a spotlight on the vibrant and innovative independent film scene in Canada. Its success can inspire other Canadian filmmakers and producers, demonstrating that unique voices and original concepts can break through on the international stage, even without massive budgets.
• A24’s Continued Influence: A24’s decision to distribute Undertone further solidifies its position as a tastemaker and a champion of distinctive cinema. The studio’s consistent success with artistically driven horror films continues to shape audience expectations and market trends, proving that there is a significant appetite for intelligent, thought-provoking genre fare.
• Career Trajectories: For Ian Tuason, Undertone is a stellar debut that firmly establishes him as a director with a unique vision and a promising future in filmmaking. Similarly, Nina Kiri’s compelling performance is likely to open doors for more challenging and prominent roles, cementing her status as a formidable talent.

In conclusion, Undertone is more than just a horror film; it is a meticulously crafted psychological experience that redefines the parameters of fear. Through its groundbreaking sound design, deeply personal narrative, and stellar performances, it has not only terrified audiences but also garnered critical acclaim, proving that true horror often resides not in what is seen, but in what is heard and, more chillingly, what is imagined in the silence. Its journey from a personal inspiration to an award-winning global phenomenon solidifies its place as a landmark achievement in modern supernatural horror.