In the Heat of the Night is a 1967 American mystery drama film directed by Norman Jewison. It is based on John Ball's 1965 novel of the same name which tells the story of Virgil Tibbs, a black police detective from Philadelphia, who becomes involved in a murder investigation in a racist small town in Mississippi. It stars Sidney Poitier, Rod Steiger, and Warren Oates, and was produced by Walter Mirisch. The screenplay was by Stirling Silliphant. Wikipedia
Mrs. Leslie Colbert: I came by to make it as clear as I possibly can: that I do not want the Negro officer taken off this case.
Mayor Webb Schubert: Negro officer?
Chief Gillespie: Yeah, well he, uh...he comes from up North, you see, and he was, uh, kinda...passing through--
Mrs. Leslie Colbert: I don't care what he is. If it wasn't for him, your impartial chief of police would still have the wrong man behind bars. I want that officer given a free hand, otherwise I will pack up my husband's engineers...and leave you...to yourselves.