R-Rated Horror Sensation: A24’s ‘Undertone’ Stuns Box Office!

Thescreescore – A24, the acclaimed independent studio renowned for its distinctive and often unsettling cinematic offerings, is celebrating a resounding triumph with its latest R-rated horror feature, Undertone. The film has not only surpassed the impressive $15 million global threshold in its second weekend but has achieved this remarkable feat on an exceptionally lean budget of just $500,000. This translates to a staggering return of over 30 times its production cost, firmly establishing Undertone as a runaway commercial success and further cementing A24’s discerning eye for genre hits.

The chilling narrative began its theatrical run with an impressive debut on March 13, 2026, pulling in over $9 million. While its second weekend saw an additional $3 million, representing a notable 66.8% dip in earnings, industry analysts attribute this understandable decline to the colossal entry of Project Hail Mary. That highly anticipated blockbuster shattered records with a staggering $140 million global opening, inevitably drawing a significant portion of the audience away from other releases.

Undertone‘s journey to the big screen commenced in July 2025, premiering at the prestigious Fantasia International Film Festival. Recognizing its potent blend of commercial and artistic appeal, A24 swiftly secured the distribution rights a mere month later in a competitive seven-figure deal. Currently captivating audiences solely in the United States and Canada, the film’s reach is poised to expand considerably next month with scheduled releases in Australia and the United Kingdom, facilitated by Vertigo Releasing and Rialto Distribution respectively. This phased international rollout means the current box office figures primarily reflect domestic performance, promising a continued upward trajectory for its global total.

This resounding success offers a welcome contrast to some of A24’s more recent theatrical ventures. Films like How to Make a Killing, starring Glen Powell, struggled to find widespread appeal, earning only $11.5 million against a $15 million budget. Similarly, the mockumentary The Moment, featuring Charli XCX, underperformed, grossing $5 million on a $4 million investment. Undertone‘s low-budget, high-return model perfectly aligns with the studio’s most celebrated triumphs, underscoring the enduring power of a well-executed genre piece.

Part of Undertone‘s initial draw can be attributed to its strong critical reception. Boasting a commendable 72% score on Rotten Tomatoes, critics widely lauded the film for its deeply immersive and genuinely creepy viewing experience, often highlighting its technical mastery in meticulously building palpable tension. Yet, navigating the often-treacherous waters of audience perception, the film has encountered a more polarizing response. Its CinemaScore stands at a C, with an audience score of 50%, as many viewers reportedly found the narrative "pointless and boring." This stark divergence between critical acclaim and popular sentiment is an intriguing, albeit common, facet of many A24 productions.

Despite the mixed public sentiment, the sheer magnitude of its box office performance augurs exceptionally well for Undertone‘s future. In a recent interview with thescreescore.com’s Grant Hermanns, writer and director Ian Tuason tantalizingly revealed that he envisions a "trilogy in mind" and is already actively developing potential narrative expansions. Such a continuation could provide much-needed answers to the lingering questions posed by Undertone‘s enigmatic ending. As of now, however, no official greenlight for a sequel has been announced.

At its core, Undertone introduces Nina Kiri as Evy, a podcast host whose professional skepticism about the paranormal is profoundly challenged upon her return home to care for her ailing mother. Strange, unsettling noises emanating from a recording of a married couple ignite a profound fear within Evy, drawing her into a terrifying mystery. The narrative is deeply rooted in Tuason’s own personal experiences, lending an authentic, unsettling layer to the horror. The ensemble cast also features Adam DiMarco, Michèle Duquet, Keana Lyn Bastidas, Jeff Yun, and Sarah Beaudin, with Dan Slater and Cody Calahan skillfully handling producer duties for the 84-minute feature. Undertone is now playing in theaters.