Anthropology student Daria, who's helping a property developer build a village in the Los Angeles desert, and dropout Mark, who's wanted by the authorities for allegedly killing a policeman during a student riot, accidentally encounter each other in Death Valley and soon begin an unrestrained romance.

African-American Philadelphia police detective Virgil Tibbs is arrested on suspicion of murder by Bill Gillespie, the racist police chief of tiny Sparta, Mississippi. After Tibbs proves not only his own innocence but that of another man, he joins forces with Gillespie to track down the real killer. Their investigation takes them through every social level of the town, with Tibbs making enemies as well as unlikely friends as he hunts for the truth.

The mutant babies have been placed by court order on a deserted island. Appalled by the cycnicism and exploitation of the children by the legal system and the media, the man responsible for them leads an expedition to the island to free them.

A black police detective is asked to investigate a murder in a racially hostile southern town.