The Devil’s Mouth combines a submerged predator with the limits of a cave system

Five friends’ trip in Thailand becomes a survival story underground.

Five friends exploring a cave system in Thailand discover that something beneath the water is hunting them in The Devil’s Mouth. Their planned adventure becomes an attempt to survive inside a place where darkness and unfamiliar passages restrict their movement. Official streaming synopsis and credits.

The cave provides more than a location for the predator. It also makes navigation part of the danger: choosing a route and keeping the group together become entangled with escaping whatever is in the water. Official streaming synopsis and credits.

Jeff Wadlow directs the Amazon MGM Studios film. Kathryn Newton, Lana Condor and Nico Hiraga appear alongside Tommi Rose, Gavin Casalegno and Tayme Thapthimthong. Official streaming synopsis and credits.

Prime Video lists a running time of 106 minutes. Its synopsis emphasizes the friends’ deteriorating trust as the hunt develops, leaving the survival problem divided between the physical surroundings, the submerged threat and the group’s ability to act together. Official streaming synopsis and credits.