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Movie from 2016 or so. Mystery/horror movie, arthouse-ish. Starts in restaurant,cook is hired to go to grand country estate to make dinner banquet for family. Older man is host. Chef tries to free woman held against her will and tries to keep food from being poisoned. Think just about the entire family at the dinner table gets killed. One woman unknowingly eats a pet or a person? The movie ends back at restaurant i think.
(NOT The Invitation)

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