A24’s “Undertone” Delivers a Chillingly Effective Horror Experience

A24 continues to solidify its position as a leading force in independent horror with the release of Ian Tuason’s debut feature, “undertone.” Premiering March 13, 2026, the film distinguishes itself through its masterful sound design and unsettling atmosphere, despite some familiar genre tropes.

A Claustrophobic Descent into Paranormal Investigation

“undertone” centers on Evy (Nina Kiri), co-host of the paranormal podcast “The Undertone,” and her skeptical approach to the supernatural. While caring for her ailing mother (Michèle Duquet) in a home steeped in Catholic iconography, Evy receives ten mysterious audio files from her co-host, Justin (Adam DiMarco). The files chronicle a husband’s attempts to document his wife’s sleep talking, which quickly escalates into something far more sinister. The film remains confined to the house, amplifying the sense of isolation and dread.

Sound Design and Negative Space: The Keys to Terror

Tuason’s direction excels in creating a pervasive sense of unease. The film’s sound design is particularly noteworthy, utilizing silence and subtle auditory cues to heighten tension. Coupled with Graham Beasley’s cinematography, which frequently frames Evy off-center against the looming darkness of the house, “undertone” effectively employs negative space to exploit the audience’s anticipation of the unseen. A Dolby theater experience is recommended to fully appreciate the film’s nuanced soundscape.

Drawing on Internet Horror Lore

“undertone” taps into contemporary fears rooted in internet culture, referencing cursed YouTube videos, subliminal messages in nursery rhymes, and haunted objects. This familiarity enhances the film’s impact, as these urban legends resonate with a generation accustomed to online horror communities. The film doesn’t rely on trauma as a central theme, instead using the setting and religious imagery as atmospheric elements.

A Familiar Framework, Expertly Executed

While the film’s narrative structure shares similarities with the “Paranormal Activity” franchise and draws inspiration from creepypasta stories, “undertone” transcends its derivative elements through its skillful execution. The film’s slow burn and deliberate pacing culminate in a climactic finale that, while somewhat bombastic, delivers a satisfyingly unsettling experience.

/Film Rating: 8 out of 10

“undertone” opens in theaters on March 13, 2026.