In the Heat of the Night is an American police procedural crime drama television series loosely based on the 1967 film and 1965 novel of the same title. It starred Carroll O'Connor as police chief Bill Gillespie and Howard Rollins as police detective Virgil Tibbs, and was broadcast on NBC from March 6, 1988, until May 19, 1992, then on CBS from October 28, 1992, until May 16, 1995.