The Devil’s Mouth premiered globally on Prime Video on July 29, 2026 and is now streaming. Jeff Wadlow’s survival thriller follows five friends into a flooded cave system in Thailand, where tight passages, rising panic and a deadly underwater predator turn their final holiday together into a fight to escape. It is also listed in our OTT releases roundup for July 27 to August 2. For a spoiler-light verdict, read our The Devil’s Mouth review.
Quick facts
| OTT release date | July 29, 2026 |
|---|---|
| Platform | Prime Video |
| Director | Jeff Wadlow |
| Lead cast | Kathryn Newton, Lana Condor, Gavin Casalegno, Nico Hiraga, Tommi Rose, Tayme Thapthimthong |
The Devil’s Mouth release date and platform
The Devil’s Mouth is available to stream on Prime Video. Amazon MGM Studios lists July 29, 2026 as the movie’s global launch date.
The release is included in Prime Video’s subscription catalogue. Availability can vary by region, but July 29, 2026 is the published global streaming date.
What is The Devil’s Mouth about?
The story begins with five college friends taking one last trip along Thailand’s coast before they move into the next stage of their lives. Their holiday leads them to a guided swim through a remote cave system called The Devil’s Mouth.
A recent storm has flooded the caves and carried sea life into fresh water. Most of the creatures did not survive the change, but one dangerous predator did. The friends become trapped in narrow waterways with limited oxygen, no easy route out and something hunting them in the dark.
The cave gives the movie its title, but it also shapes the central threat. The characters are not simply trying to avoid a shark in open water. They must move through a submerged maze where visibility is poor, space is scarce and a wrong turn can separate the group or waste the air they need to reach safety.
Who is in the cast?
The principal ensemble includes Kathryn Newton, Lana Condor, Gavin Casalegno, Nico Hiraga, Tommi Rose and Tayme Thapthimthong. Our cast and character guide tracks the confirmed role names. Prime Video lists Jeff Wadlow as director, with Basil Iwanyk and Erica Lee among the producers.
The setup depends on the chemistry and fractures within this group. As fear spreads, old tensions begin to matter as much as the physical route through the cave. The cast therefore has to sell both sides of the survival story: the immediate predator threat and the loss of trust between friends who need one another to get out.
What should viewers expect?
This is a creature feature built around confinement rather than a wide-open ocean chase. The official trailer moves between a bright Thailand holiday and dark cave passages, making the contrast part of the hook. Water, rock and low visibility keep the danger close even when the predator is off-screen.
Viewers who enjoy shark thrillers, cave-survival stories and films where a group unravels under pressure are the clearest audience. The PG-13 classification also points to an accessible studio thriller rather than an extreme gore-first horror movie.
Is The Devil’s Mouth worth adding to your watchlist?
The premise gives it a clear streaming-night appeal: a recognisable predator, a visually distinctive location and an ensemble with enough unresolved tension to complicate every escape decision. Its strongest point of difference is the submerged cave maze, which can keep the shark threat from feeling like another open-water repeat.
That makes The Devil’s Mouth an option for viewers who want a claustrophobic survival thriller on Prime Video. Our review explains where the cave tension works and why the familiar shark-movie pattern limits the payoff.
The Devil’s Mouth FAQ
When did the movie release on OTT?
The Devil’s Mouth premiered globally on July 29, 2026.
Where can I watch The Devil’s Mouth?
The movie streams on Prime Video as part of the platform’s subscription catalogue.
What is The Devil’s Mouth about?
It follows five friends who become trapped in a flooded cave system in Thailand with limited oxygen and a deadly underwater predator.
Who stars in The Devil’s Mouth?
The cast includes Kathryn Newton, Lana Condor, Gavin Casalegno, Nico Hiraga, Tommi Rose and Tayme Thapthimthong.