AceShowbiz - Kathryn Newton and Lana Condor star in the upcoming horror thriller The Devil's Mouth, which will be available on Prime Video starting July 29, 2026. The film's official poster and trailer have been released, offering a glimpse into the terrifying underwater adventure.

Directed by Jeff Wadlow and written by Aja Gabel and Myung Joh Wesner, the movie follows five friends on a final trip along Thailand's coast. They sign up for a guided swim through a remote cave system known as The Devil's Mouth, but their journey turns deadly when a freak storm floods the caves with sea life.

According to the synopsis, the creatures died in the fresh water, but something survived and is now hunting the group. The friends must navigate the labyrinth of narrow waterways while being pursued by a fast, silent, and deadly predator. As panic spreads and trust erodes, survival becomes a savage game.

The cast also includes Nico Hiraga, Gavin Casalegno, Tommi Rose, and Tayme Thapthimthong. The film is produced by Basil Iwanyk, Erica Lee, and Wadlow, with executive producers Carsten H. W. Lorenz, Will Flynn, and Sam Greenberg.

The official trailer, now available, showcases the claustrophobic terror and stunning visuals of the cave system. Newton and Condor lead the ensemble as they face the horrors lurking in the darkness.

Wadlow, known for his work in the horror genre, brings a sense of urgency and dread to the film. The 105-minute PG-13 thriller is distributed by Amazon MGM Studios.

With its release just weeks away, The Devil's Mouth is poised to be a must-watch for horror fans this summer. The film promises a gripping tale of survival and sacrifice in one of nature's most unforgiving environments.