There's big trouble in Quincy's Gap when the "Diva of Dough" arrives to bake the wedding cake for Milla and Jackson's Christmas Eve wedding. The Diva, a celebrity television chef and cookbook author, is Milla's younger sister. And while her cakes are delectably sweet and incredibly beautiful, the Diva makes enemies wherever she goes. When one of the Diva's enemies decides to take her out, and Deputy Lucy Hanover finds the famous chef's body covered in cake batter, the Supper Club members find themselves up to their necks in suspects.