How to watch Kathryn Newton in The Devil's Mouth free
Fans searching how watch Kathryn Newton in her new Amazon thriller can stream “The Devil’s Mouth” on Prime Video starting today, July 29. The shark survival film is exclusive to the service, but new members can try Amazon Prime with a 30-day free trial that includes Prime Video access.
The release lands amid Shark Week on Discovery, while Prime Video drops its own shark thriller, according to Page Six. For more celebrity streaming alerts, check our Celebrity Breaking News hub.
Key Takeaways
- “The Devil’s Mouth” debuts on Prime Video on July 29, 2026.
- Kathryn Newton stars as Sara in the Thailand cave shark thriller.
- The movie is exclusive to Prime Video subscribers.
- New Amazon Prime members can start with a 30-day free trial.
- Young adults ages 18 to 24 can get a six-month free trial, then pay $7.49 a month.
Where can you stream The Devil’s Mouth?
“The Devil’s Mouth” is exclusive to Prime Video and was released on the streamer today, July 29. You will need an Amazon Prime subscription to watch the new movie.
After a free trial ends, Amazon Prime costs $14.99 per month or $139 per year, Page Six reports.
How can you watch Kathryn Newton for free?
If you are not a Prime Video subscriber yet, you can start with a 30-day Amazon Prime free trial. That trial includes Prime Video streaming plus other Prime perks such as free two-day shipping and exclusive deals.
All 18- to 24-year-olds, regardless of student status, are eligible for a discounted Prime for Young Adults membership with age verification. After a six-month free trial, members pay 50 percent off the standard monthly price — just $7.49 per month — for up to six years and get all the perks.
What is The Devil’s Mouth about?
Kathryn Newton, known for “Big Little Lies,” leads the survival thriller. Five friends set out on one last adventure by going on a guided swim through a remote cave system in Thailand known as The Devil’s Mouth, a natural wonder that is as breathtaking as it is unforgiving.
The group soon discovers that something is hunting them under the water. In the suffocating darkness, trust erodes, panic spreads, and every wrong turn becomes a fight for survival.
Who else stars with Kathryn Newton?
In addition to Newton as Sara, the film stars Lana Condor (“To All the Boys I’ve Loved Before”) as Max and Gavin Casalegno (“The Summer I Turned Pretty”) as Greg. Condor and Casalegno are both known for their work in teen romantic dramas.
The cast also includes Nico Hiraga as James, Tommi Rose as Adrienne, and Tayme Thapthimthong as Wat.