Oscar-winning thriller about the bigoted sheriff in a small Mississippi cotton town who finds himself forced into collaboration with a black homicide expert from Philadelphia. Sparta, Mississippi is a small, quiet town broiling on a steamy September night. At the train station Virgil Tibbs, a solitary black man from out of town, is arrested for the murder of a rich northern industrialist. Police chief Gillespie has no experience of a murder inquiry and subjects Tibbs to a bigoted, insolent interrogation. But when Tibbs reveals himself to be a top city homicide cop, his is just the assistance Gillespie can do without.