The Devil's Mouth

Right now you can watch The Devil's Mouth in Australia on Amazon Prime Video, and in the US on Amazon Prime Video — and it earns its twists rather than manufacturing them. It says what it needs to say in one sitting, no filler. A 6/10 rating says what the writing already makes obvious: this one works. Watch Kathryn Newton work — the performance is a masterclass in restraint. Start it on Amazon Prime Video whenever you need something guaranteed to land.

The Devil's Mouth arrived without much fanfare and built its audience the hard way — through word of mouth. At its heart, The Devil's Mouth understands what makes crime drama work — character first, plot second. Five friends 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. Credit to Kathryn Newton and Lana Condor for grounding it — this is a cast that earns the twists. It hit screens in 2026. The plot mechanics of The Devil's Mouth never overwhelm the human cost underneath them. It knows exactly what it is, and does not try to be anything else.

If you cannot walk away from a good mystery, The Devil's Mouth will keep you hooked. If you have run out of similar titles to watch, this is a strong next pick. Short enough to finish in one sitting, substantial enough to feel satisfying. Kathryn Newton anchors it, but the writing does the real work. If you are going to commit to one crime drama this month, make it this one.