Dafne Keen Summons Ancient Evil in ‘The Whistle’

British director Corin Hardy has shared the first chilling teaser for The Whistle, a supernatural horror set to arrive in cinemas early next year. Released by IFC Films, the teaser offers a brief but unsettling glimpse into a teenage curse rooted in ancient myth, with a cursed Aztec death whistle summoning a sequence of fatal encounters for the unlucky souls who blow it.

Starring Logan and Deadpool & Wolverine‘s Dafne Keen, alongside Sophie Nélisse, Sky Yang, Jhaleil Swaby, Ali Skovbye, Percy Hynes White, Michelle Fairley and Nick Frost, The Whistle follows a group of high school outcasts who stumble upon a strange relic during a seemingly harmless detour. Their curiosity proves fatal. Once activated, the artefact emits a sound so horrific that it acts as a summoning cry for their own deaths, which then stalk them one by one.

The script, penned by Owen Egerton, leans into familiar territory for horror audiences, with possible echoes of Final Destination and The Ring, but Hardy’s film draws its menace from a cultural artefact not often explored in Western genre cinema. The death whistle, based on real-world Aztec ceremonial objects believed to invoke spirits or gods of the underworld, lends an eerie specificity to the film’s mythos.

The teaser offers only a glimpse of the whistle’s audio torment, wisely withholding the sound design for the theatrical experience. Instead, it focuses on mood, shadows and mounting dread. With a cast that mixes emerging talent and genre veterans, Hardy appears to be balancing youthful fear with gravitas.

Hardy, whose previous work includes The Hallow, The Nun and multiple episodes of Gangs of London has an affection for stylised horror, and this remains evident in the trailer. His direction hints at a return to atmospheric terror, with a heavy focus on folklore and mortality. Whether The Whistle expands upon its intriguing concept remains to be seen, but its trailer sets the tone for a claustrophobic, myth-driven horror.

The film has not yet premiered on the festival circuit, but with IFC Films and Shudder backing its theatrical release in early 2026, anticipation will likely grow in the coming months. The whistle may be cursed, but we are already leaning in to hear more, and we’re sure you are too!

The Whistle trailer