The brave young woman on the receiving end of that lie is Marta Cabrera (the superb Cuban actress Ana de Armas), Harlan’s nurse and, by all appearances, his one true friend. But few lies are crueler, or less convincing, than the five little words we hear spoken near the beginning: “You’re part of this family.” His daughter-in-law, Joni (Toni Collette), has been secretly dipping into his fortune for years. His son-in-law, Richard (Don Johnson), is hiding an extramarital affair.
Someone has slit the throat of Harlan Thrombey (Christopher Plummer), the 85-year-old patriarch of a family with deep pockets and an even deeper capacity for duplicity. The lies begin piling up early in “Knives Out,” Rian Johnson’s magnificently crafted tale of murder and mayhem.