AceShowbiz - Undertone, the latest R-rated supernatural horror from A24, has sparked mixed reactions since its theatrical release in March 2026. Premiering eight months earlier at the Fantasia International Film Festival, the film initially garnered positive critical attention, reflected in a solid 76% rating on Rotten Tomatoes. However, audience response has been notably divided, with a current audience score of just 52% on the same platform.

Undertone centers on Evy, portrayed by Nina Kiri, a podcaster who investigates strange audio recordings made by a married couple. These recordings trigger fear and paranoia in Evy, despite her skepticism toward paranormal phenomena. The film’s immersive atmosphere and eerie sound design have earned praise from critics who found it to be an effective, chilling experience in theaters.

In contrast, many moviegoers have expressed disappointment, criticizing the film for feeling uneventful and lacking purpose, especially given its runtime of less than 90 minutes. This polarizing reception highlights the film’s challenge in connecting with a wider audience beyond its initial critical acclaim.

Following its festival premiere, A24 secured a seven-figure worldwide distribution deal for Undertone, leading to its theatrical release in March. Despite the mixed reviews, the film has proven to be a financial success. With a modest budget of $500,000, it has already grossed over $4.3 million domestically, marking it as one of A24’s most profitable projects relative to cost. This achievement complements the company’s strong start to 2026, following the box office success of Pillion, starring Harry Melling and Alexander Skarsgård.

The commercial performance of Undertone also bodes well for the film’s future prospects. Director and writer Ian Tuason revealed in an interview with ScreenRant’s Grant Hermanns that he envisions a trilogy centered on the story. He confirmed that discussions with A24 are underway regarding potential sequels, which could address some of the lingering questions and mysteries that have contributed to the film’s divisive reception.

Undertone marks the directorial debut of Ian Tuason, who also penned the screenplay. Producers Dan Slater and Cody Calahan joined the project, assembling a cast that includes Nina Kiri, Adam DiMarco, Michèle Duquet, Keana Lyn Bastidas, Jeff Yung, Sarah Beaudin, and Brian Quintero. Currently, the film is screening in theaters nationwide.

Despite its polarizing reception, Undertone stands as a notable example of low-budget horror achieving both critical attention and commercial viability. The film’s blend of psychological suspense and supernatural elements resonates differently between critics and general audiences, highlighting the subjective nature of horror entertainment.

As the film continues its theatrical run, the future of the Undertone franchise remains promising, especially if the planned trilogy comes to fruition. Fans and skeptics alike await further developments from Ian Tuason and A24, who may expand upon the intriguing narrative threads left open in this initial installment.