A24’s Terrifying ‘undertone’ Trailer Wants to Be Heard

Turn the lights down low and the volume way up for A24’s ultra-creepy new trailer for undertone.

undertone releases in theaters on March 13, 2026.

The film follows a paranormal podcast host who moves into her dying mother’s house to be her primary caregiver. When she receives audio recordings of a young pregnant couple experiencing supernatural noises, she realizes the woman’s story mirrors her own.

Sound plays a vital role in inducing chills in the new trailer below, fitting for a podcaster who’s trapped in an aural nightmare.

Nina Kiri (“The Handmaid’s Tale”) stars in the film, which marks the feature debut of writer-director Ian Tuason. Tuason will next tackle the eight installment in the Paranormal Activity franchise.

Kris Holden-Ried (“The Umbrella Academy”), Michèle Duquet (The Virgin Suicides), Keana Lyn Bastidas (“The Hardy Boys”), and Jeff Yung (The Shrouds) round out the cast.

Joe Lipsett came away from the film’s Fantasia premiere a massive fan of the scares. He wrote in his 4.5-skull review, “I can’t remember the last time a movie made every hair on my body stand up, but undertone got me good.” Of the film’s use of sound, he writes, “It’s more than that, though; more so than any other recent horror film, The Undertone lives and dies on how sound and silence are used. And it is used incredibly well.”

Slaterverse Pictures’ Dan Slater and Black Fawn Films’ Cody Calahan produce. Executive producers include Steven Schneider and Roy Lee for Spooky Pictures, Chad Archibald for Black Fawn, Brit MacRae and Daril Fannin for Kino Studios, and DimensionGate.

undertone will next terrify Sundance audiences before arriving in theaters in March, on a Friday the 13th, no less.