Amazon Prime Video’s The Devil’s Mouth: what to know about release, cast and plot

A new shark survival thriller is headed to streaming this summer, and it pairs familiar young stars with a director known for crowd-pleasing horror. The Devil’s Mouth drops into the cramped, claustrophobic world of submerged caves and forces college friends to face a very small space and a very large predator.

With a cast that includes breakout YA favorites and a trailer that promises high-tension scares, the film looks aimed at both teen drama fans and viewers who like their horror wet, sharp, and relentless. Here’s everything currently known about the movie’s release, plot, cast, trailer and creative team.

Release date and streaming details: When and where to watch

The Devil’s Mouth is scheduled to arrive on Prime Video on July 29, 2026. That release date applies to the U.S. and is listed for other regions, including Australia, on the same day through Amazon’s platform.

• Platform: Prime Video
• Release date: July 29, 2026
• Availability: Initial rollout announced for major territories; local windows may vary

The premise: A claustrophobic shark survival story set underwater

Basic setup

A group of college students on a trip explores an underwater cave system in Thailand and become trapped. As water levels, tensions and stakes rise, the party discovers a bull shark has made the dark passageways its territory. Escape requires cooperation—but personal conflicts and the environment itself make survival far from guaranteed.

Key elements to expect

• Close-quarters suspense in submerged caverns
• A large, persistent bull shark as the central antagonistic force
• Interpersonal drama among a group of friends that complicates rescue attempts
• Touches of romance and coming-of-age conflict threaded through the horror

Cast and characters: Who’s playing whom

The film mixes recognizable young talent with performers from action and indie scenes. Leading roles include:

• Kathryn Newton as Charlie
• Lana Condor as Kate
• Gavin Casalegno as Greg
• Nico Hiraga as James
• Tommi Rose as Adrienne

Expect a blend of emotional stakes and adrenaline-driven performances from this ensemble, especially given the confined setting that forces characters into intense, character-revealing moments.

Director and creative team: Who brought the film to life

Jeff Wadlow directs, bringing his experience from genre pictures to the project. His previous credits include Truth or Dare, Fantasy Island and Imaginary, titles that show a mix of mainstream horror sensibilities and crowd-focused storytelling. Producers and technical crews emphasize practical effects and underwater cinematography to heighten immersion.

Trailer breakdown: What the first look reveals

The official trailer has been released and leans into claustrophobic terror rather than jump-scare excess. Early footage highlights:

• Choppy, disorienting underwater cinematography that sells the cave environment
• Shots of close encounters with a bull shark and the physical limits of escape routes
• Teases of romantic tension and fractured friendships under pressure

The trailer is available on Prime Video’s channels and social platforms for viewers who want a longer look at the film’s tone and visual approach.

Who should watch: Why this matters for YA fans and horror viewers

There are several reasons The Devil’s Mouth could land with different audiences:

• YA viewers may tune in for stars known from teen dramas and franchise work.
• Horror fans who enjoy naturalistic creature features will appreciate the focus on a single, identifiable threat (a bull shark) rather than supernatural elements.
• Viewers who like survival films—think claustrophobia, moral decisions under pressure and small-group dynamics—will find familiar beats executed in a watery environment.

Expect a mix of emotional stakes and visceral scares.

Production notes and what’s still unknown

• Filming locations included Southeast Asian coastal areas to capture authentic cave and ocean visuals.
• Producers have signaled heavy use of practical effects augmented by CGI for safety and realism.
• International release windows beyond the Prime Video launch are pending formal announcements.

Further casting details, behind-the-scenes clips and festival screenings may appear before the July 29 release.

What to watch for next

• Additional trailers or featurettes that spotlight the shark effects and underwater filming techniques
• Interviews with the cast about the physical and emotional challenges of shooting in tight, submerged sets
• Information on global streaming windows and potential theatrical tie-ins in select markets

More information will be published as official updates and promotional materials arrive ahead of the film’s streaming debut.

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David Miller

David Miller is an entertainment expert with a passion for film, music, and series. With eight years in cultural criticism, he takes you behind the scenes of productions and studios. His energetic style guides you to the next big releases and trending sensations.