The Devil’s Mouth understands the ruthless efficiency of a good cave-horror premise: put five college friends underground, add an underwater hunter that is fast and silent, then let panic dismantle the group from within. The location restricts escape, the threat attacks where visibility is worst, and eroding trust ensures the humans are not making matters any easier.
At 106 minutes, it is a compact thriller-horror proposition rather than an endurance test. Its sharpest idea is making the danger aquatic as well as subterranean; being lost in a cave is bad enough without something hunting beneath the surface.
Where to Watch
UAE viewers can stream The Devil’s Mouth on Prime Video. The monthly plan costs AED 16 per month, while the annual plan costs AED 140 per year. The supplied availability lists subscription streaming only, with no separate rental or purchase option.
Watch the Trailer
Watch the trailer below for a first look at the cave-bound survival setup and its underwater threat.
What Is It About?
Five college friends travel to explore the Devil’s Mouth cave system in Thailand, treating it as one final adventure before life in the real world begins. The farewell trip rapidly becomes a survival fight when they discover that something fast, silent and deadly is hunting them under the water.
The hook is not merely that the group is trapped in darkness. Panic spreads, trust erodes and every wrong turn compounds the danger, turning the cave into both a physical maze and a social pressure cooker. It is a clean horror design: limited space, compromised visibility and five people becoming less capable of cooperating precisely when cooperation is essential.
Runtime
The Devil’s Mouth is a standalone feature with a runtime of 106 minutes.
Cast
Kathryn Newton plays Charlie and Lana Condor plays Kate, while Gavin Casalegno appears as Greg, Nico Hiraga as James and Tommi Rose as Adrienne. This is an ensemble-first setup rather than a one-character showcase, which suits a story built around trust fracturing across a five-person group.
Newton and Condor provide the film’s leading pair of named roles, while Casalegno, Hiraga and Rose complete a cast compact enough for each friendship and disagreement to remain legible in the darkness. In survival horror, five is a useful number: enough people for alliances to split, but not so many that the cave starts resembling a badly organised university excursion.
Good to Know
Is The Devil’s Mouth kid-friendly?
The UAE rating is 16+. Parents should use that supplied rating when deciding whether the film is suitable.
Is The Devil’s Mouth free to watch?
The supplied UAE availability lists it as subscription streaming on Prime Video, with plans at AED 16 per month or AED 140 per year.
How long is The Devil’s Mouth?
The film has a runtime of 106 minutes.
The Devil’s Mouth has a precise survival-horror engine: five friends, suffocating darkness and a predator that attacks underwater. If cave-set panic is your preferred route to a tense evening, the combination of restricted movement and collapsing trust gives this one a suitably nasty bite.
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