The Devil’s Mouth looks set to be a survival horror built on relentless tension, with the kind of aquatic setting that turns every breath into a risk and every movement into a test. Films like this depend as much on atmosphere and endurance as on scares, and the premise alone suggests a shoot that would be physically punishing for anyone involved.

That is exactly why the stars’ recent comments about the production stand out: the film was not just intense on screen, it was demanding behind the scenes too.

Kathryn Newton, during a chat with ExtraTV, said the experience left little room for anything else.

“Our movie was so intense yeah we didn't have time to talk about The Summer I Turned Pretty.”

That line says a lot about the pressure of the project, suggesting a set where the work consumed nearly every spare moment and the emotional tone stayed locked into the film’s survivalist energy. Lana Condor was even more direct about the strain, saying, “It was all consuming.”

She then expanded on just how difficult the production became, describing the shoot as one where there were only a few scenes on land and most of the film took place in or under water. According to her, some days involved working at the bottom of the water for long stretches while wearing respirators and taking directions in a setting that was both physically and mentally exhausting.

Condor also admitted, “I personally was in a constant state of fear.” That confession captures the tone of the film itself, which seems designed to immerse both cast and audience in a hostile, high-pressure environment where survival is never guaranteed.

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What they endured during filming now feeds directly into the intensity audiences can expect on screen.

The Devil’s Mouth is shaping up to be one of Prime Video’s most intense summer releases, blending survival horror with young-adult drama in a setting designed to keep everyone on edge. The film follows a group of college friends whose trip to Thailand turns disastrous when they get trapped in an underwater cave with a bull shark, turning a getaway into a fight for survival. 

The cast adds plenty of appeal, especially for viewers who know Kathryn Newton and Lana Condor from other YA projects. Newton plays Charlie, while Condor appears as Kate, and the group is rounded out by Gavin Casalegno as Greg, Nico Hiraga as James, and Tommi Rose as Adrienne.

Directed by Jeff Wadlow, who has already worked on horror-leaning titles like Truth or Dare, Fantasy Island, and Imaginary, the film seems positioned to deliver a familiar but effective blend of scares, suspense, and character conflict. At the moment, the biggest confirmed detail is that The Devil’s Mouth is set for a July 2026 release on Prime Video in Australia, with the exact date still under wraps. 

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What do you think about the intense filming experience behind The Devil’s Mouth and its underwater survival premise? Let us know in the comments.