There's not a lot of depth to any of the characters, and I'm fairly certain it's intentional. Within this context, it's an accomplished horror story riffing on old tropes but with the kind of polish that makes even the nice parts feel horrible. What you see is what you get, basically.
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This is a post pulled in via Letterboxd, find all of them here. Reviews are short and sweet and very subjective. I'm not a film-major, folks.