The Devil’s Mouth 2026

The Devil’s Mouth (2026) is an American survival horror thriller directed by Jeff Wadlow, starring Kathryn Newton, Lana Condor, Gavin Casalegno, Nico Hiraga, and Tommi Rose. The film follows five college friends who travel along Thailand’s coast for one last adventure before entering the real world. Their trip takes a terrifying turn when they enter a remote underwater cave system known as the Devil’s Mouth and discover that they are being hunted by a deadly predator.

Released worldwide on Prime Video on July 29, 2026, the 105-minute, PG-13 thriller combines claustrophobic cave horror with the familiar shark-survival formula. Early critical reaction has been mixed, with praise for its setting and survival tension but criticism of its predictable genre mechanics.

Storyline & Plot Analysis

The The Devil’s Mouth storyline follows a group of college friends who travel to Thailand looking for an exciting final adventure before their lives move in different directions.

Their plans lead them to a remote cave system where they sign up for a guided swim. What initially looks like a spectacular natural attraction becomes a nightmare after the group becomes trapped beneath the surface.

A storm has recently flooded the cave system, bringing sea life into the freshwater environment. Most of the creatures do not survive, but something far more dangerous has adapted to the conditions. The friends soon discover that they are sharing the submerged tunnels with a deadly shark.

As oxygen begins to run low, the physical danger is accompanied by growing tensions within the group. Old disagreements and power struggles resurface, making cooperation increasingly difficult. The narrow underwater passages also give the movie its central source of suspense: there is little room to escape, limited visibility and nowhere safe to hide.

The result is a survival story built around fear, trust, friendship and the instinct to stay alive.

Production Details & Behind-the-Scenes

Jeff Wadlow directed The Devil’s Mouth and co-wrote the screenplay with Aja Gabel and Myung Joh Wesner. Basil Iwanyk, Erica Lee and Wadlow produced the film, with Amazon MGM Studios and Lionsgate among the companies involved in production.

James Kniest served as cinematographer, Sean Albertson edited the movie, and Bear McCreary composed the original score. The production was filmed in and around Krabi, Thailand, providing the film with a tropical setting that contrasts sharply with the darkness and confinement of its underwater sequences.

The film’s main technical challenge is its underwater setting. Rather than relying solely on an open-water shark attack concept, the filmmakers place the characters inside confined cave passages, creating a more claustrophobic survival environment.

Cast & Characters

The The Devil’s Mouth cast includes:

• Kathryn Newton as Sara – One of the central members of the group and a key figure in the fight for survival.
• Lana Condor as Kate – A member of the group caught in the increasingly dangerous cave expedition.
• Gavin Casalegno as Greg – One of the friends whose adventure turns into a desperate struggle.
• Nico Hiraga as James – A member of the college-friend group.
• Tommi Rose as Adrienne – One of the friends trapped inside the cave.
• Tayme Thapthimthong as Wat – Connected to the group’s cave expedition.
• Harrison Luna as Ryan – Appears as the Handsome Diver.

Kathryn Newton leads the ensemble, while Lana Condor and Gavin Casalegno add recognizable young-star appeal. The group dynamic is particularly important because the movie uses interpersonal conflict alongside the physical threat to maintain tension.

Release Date & Reception

The Devil’s Mouth premiered on Prime Video on July 29, 2026. It carries a PG-13 rating for violent content, bloody images, suggestive material and some language, with a runtime of approximately 1 hour and 45 minutes. The film was released as a streaming title rather than receiving a conventional theatrical box-office run.

Where to Watch The Devil’s Mouth

If you’re searching for where to watch The Devil’s Mouth, the movie is streaming exclusively on Prime Video following its July 29, 2026 release. Prime Video lists the film with multiple dubbed audio and subtitle options in addition to its original English soundtrack.