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 and tells the story of Virgil Tibbs, a Black police detective from Philadelphia, who becomes involved in a murder investigation in a small town in Mississippi. It stars Sidney Poitier and Rod Steiger, and was produced by Walter Mirisch. The screenplay was written by Stirling Silliphant.

https://en.wikipedia.org/wiki/In_the_Heat_of_the_Night_(film)