The Devil's Mouth (2026) is a Thriller, Horror film that follows five college friends set off to explore the Devil's Mouth cave system in Thailand for one last adventure before life in the real world begins. But they soon discover that something is hunting them under the water… fast, silent, and deadly. In the suffocating darkness, trust erodes, panic spreads, and every wrong turn becomes a fight for survival. The Devil's Mouth is not currently listed with streaming providers in your selected region, but availability can change over time. It has a user rating of 8.0 out of 10 from 2 votes. Fans of thriller movies may also want to explore similar titles below.