In the Heat of the Night plot
"They got a murder on their hands. They don’t know what to do with it."
When the body of an industrialist is found in a small town on the Mississippi, a black man is arrested. The interrogation, conducted in a brutal and biased manner by Police Chief Bill Gillespie, reveals that the man himself is a police officer. His name is Virgil Tibbs, top detective in the Philadelphia Department of Homicide. Although Tibbs and Gillespie can hardly breathe, they are nevertheless obliged to solve the murder case together. Tibb's suspicions go to the aristocratic Eric Endicott, a supporter of the old Southern values. But in the end he has to conclude that his suspicions are also based on prejudice. As the investigation progresses, Tibbs and Gillespie develop more and more respect for each other.