Virgil Tibbs returns to Sparta and joins the police force as chief of detectives.His arrival is met with resistance from police chief Bill Gillespie - who resents having an officer hired without his approval.Virgil has trouble adjusting to the small, antiquated police force.Tibbs' first case is a racially charged murder case that is soon complicated when the suspect is murdered in his cell.

Virgil refuses to let go of a grudge against a wealthy former classmate who cheated him out of a scholarship.The man has promised city leaders that he will move his business to Sparta,but not all of his business interests are legal.The nephew of an old friend of Gillespie's finds his life in danger after he steals drugs stored in the businessman's mansion.

An angry Gillespie seeks answers when an old friend is shot.And Virgil narrowly escapes death after trying to ascertain the real reason behind an old adversary's return to Sparta.Nan finds herself in danger after she finds out the truth about her new love.