A fascinating concept is buried under atrocious acting and dialogue (lots of telling not showing and then telling some more: “I need to visit my sister, she’s a psychologist too-” WHO CARES), a back-and-forth-spotlight narrative on the beach that’s chopped up like a middle school stage play, camerawork that somehow depletes the suspense and horror instead of adding to it, and an over-explained ending that mars any thematic poignancy that came before (see the “what were we fighting about” scene).
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