An American African expert detective (Poitier) is forced to team up with a racist and bad tempered sheriff Steiger) of a small town in Mississipi to find out the murderer of a wealth man of the community. Almost a classic, the movie shines with the great performances by Poitier and Steiger but in fact the plot is a bit too simple and the characters are shallow and not well developed (for example, why Mr. Endicott was a principal suspect?).Jewison made a good directional work, one of the great achievement here. I give this a 7 (seven).