Kathryn Newton and Her Friends Fight for Survival in ‘The Devil’s Mouth’ Trailer

June 30, 2026

Written by Kelli Marchman McNeely

Kelli Marchman McNeely is the owner of HorrorFuel.com. She is an Executive Producer of "13 Slays Till Christmas" which is out on Digital and DVD and now streaming on Tubi. She has several other films in the works. Kelli is an animal lover and a true horror addict since the age of 9 when she saw Friday the 13th. Email: [email protected]

Before real life can crush the souls of five college graduates, a remote cave system in Thailand decides to try doing it literally. The Devil’s Mouth aims to blend claustrophobic, underwater terror with the sharp energy of a summer popcorn flick, ensuring you’ll think twice before booking that post-grad backpacking trip.

The Talent

Featuring a charismatic young ensemble including Kathryn Newton, Lana Condor, Nico Hiraga, Gavin Casalegno, and Tommi Rose, the film perfectly bottles that vibrant, overconfident college energy before tossing it directly into a blender. What starts as a final, sun-drenched hurrah along a breathtaking coastline quickly devolves into a desperate, soggy fight for survival when the group signs up to explore a secluded cave system known, naturally, as The Devil’s Mouth.

Directed with a keen eye for suspense by Jeff Wadlow, the film brings high-stakes tension to a screenplay penned by Aja Gabel and Myung Joh Wesner. Along with the core cast, the thriller also stars Tayme Thapthimthong, rounding out a survival adventure that is as unforgiving as it is fiercely entertaining.

Spring Break Meets Survival Horror

Deep inside this suffocating labyrinth, the vibe goes from Spring Break to Survival Horror thanks to a freak storm from the previous week. The tempest flooded the caves with sea life that promptly perished in the fresh water—except for one highly unbothered, incredibly hostile apex predator that didn’t get the memo. Suddenly, the friends find themselves hunted by a silent, underwater nightmare in an environment where every blind corner is a panic attack waiting to happen.

As the oxygen runs low and the body count threatens to rise, the group’s tight-knit bond begins to fracture faster than their sense of direction. Trust becomes a luxury they can’t afford; panic takes the driver’s seat, and the suffocating darkness forces them to realize that escaping this natural death trap will require a few brutal human sacrifices.

Coming Soon

Get ready for an intense ride: The Devil’s Mouth debuts exclusively on Prime Video on July 29, 2026. Watch the new trailer below.

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