Amazon's new shark movie, The Devil's Mouth, has arrived on Prime Video. Directed by Jeff Wadlow, the feature blends creature-feature survival horror with an exploration of toxic codependency between best friends Max (Lana Condor) and Sara (Kathryn Newton). Critics have shared their thoughts on how well the film balances its claustrophobic setting with its character-driven tension.
Critical Consensus on Story and Character Dynamics
Reviewers point out that The Devil's Mouth stands out from standard monster movies by focusing heavily on the complex relationship between its two female leads. Critics note that Max is bossy, selfish, and overbearing, yet Lana Condor's performance makes her believable and keeps Sara's devotion understandable. Meanwhile, Kathryn Newton plays Sara as a quiet introvert who transforms under pressure when a bull shark gets trapped in a freshwater cave system in Thailand.
Reviewers highlight the screenplay by Aja Gabel and Myung Joh Wesner—which originated on the 2019 Black List under the title Apex—for giving the narrative a psychological layer beyond typical B-movie thrills. Critics agree that the shifting power dynamics between the introverted Sara and her extroverted best friend provide the film with unexpected bite.
Directorial Approach and Underwater Horror
Critics generally praise Jeff Wadlow's handling of the physical environment. Reviewers note that while Thailand serves largely as exotic set dressing, the labyrinthine underwater caves are utilized effectively to build suspense. Instead of relying on broad daylight and visible fins, the film uses murky water and sudden attacks against limestone walls to deliver tension.
Reviewers also commend the clarity of the staging, pointing out that camera overlays of the cave system help viewers track the characters' movements through the dangerous red path. According to critical consensus, the underwater horror is staged with clear direction, leading to a satisfyingly nasty payoff in the finale.
The Verdict for Viewers
Reviews indicate that The Devil's Mouth succeeds by recognizing that toxic friendships can be just as stressful as fighting off a hungry bull shark. For viewers looking for a streaming thriller with clear underwater action, solid lead performances, and a psychologically grounded monster premise, critics suggest the Prime Video release delivers a worthwhile watch.