If you remember in the film Rod Steiger has the murder of a rich northern industrialist on his hands and reluctantly uses the expertise of visiting homicide detective Sidney Poitier to solve the murder. Now years later, Virgil Tibbs formerly of the Philadelphia PD Homicide Squad and now played by Howard E. Rollins, Jr. has responded to an offer from Chief Gillespie. Gillespie is now Carroll O'Connor and has made a place for Tibbs on the Sparta, PD as a newly made detective. Rollins IS the Detective Division of the Sparta, PD.
Because this show clicked so well these characters were fully developed over the seven year run of the series. We got to know everybody in the small town of Sparta, Mississippi and even the most minute characters were three dimensional, the writing on this show was so good. O'Connor alluded to his racist past and we saw a man in Chief Gillespie who was a work in progress. In the end he fell in love with black city council member Denise Nicholas.
Rollins had to adjust too, things don't quite work the same way in Sparta, Mississippi as they do in Philadelphia. And I'm not speaking necessarily of racial attitudes. Alan Autry played Bubba Skinner and he was something of a protégé of O'Connor's and he thought he ought to have been the detective. He was not a stupid guy either by any means. He and Rollins gradually developed a working relationship over the course of the show.
Gunsmoke was the first show to put the main characters within the context of the town they lived in. Beyond James Arness and the other principal cast members, Dodge City had a nice group of recurring regular citizens. That was nothing though like Sparta, Mississippi. Watching In The Heat Of The Night was like taking residence in that town for an hour each week.
In The Heat Of The Night was television series at its best, sad that it came to an end because of the health and other problems of its two lead cast members. It could still be running today.