Axiom

"Axiom" follows the story of Julius, a well-respected museum guard, who invites his colleagues on a sailing trip aboard his family's aristocratic yacht. As the journey progresses, Julius's true identity is revealed, and his carefully constructed facade begins to crumble. As tensions rise, the group must confront the darkness lurking beneath the surface of their seemingly idyllic excursion.

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Some movies that have similar genres and were produced around the same time as Axiom include The Brutalist, How to Make Millions Before Grandma Dies, Aftersun, Billionaire Boys Club, The Whale, Perfect Days.