"For fifteen years, Mr. Sitwell has worked as the groundskeeper for the Barclays, a well-to-do white family. He is part of the household's all-black staff, along with "Miss Mamie," the talented cook, and new maid Jennie Williams. But the Barclays' fortunes have fallen, and their money is almost gone. When a business associate proposes selling Miss Mamie's delicious rib sauce under the brand name "The Rib King" -- using a caricature of a wildly grinning...