January means ice wine season in the Niagara Falls region, and Charming Books owners Violet and Grandma Daisy Waverly have decided to host celebrity sommelier Belinda Perkins's book signing during the annual midnight grape-harvest festival. Little do either Waverly women know, the ice wife festival will turn colder still when Violet finds Belinda in the middle of the frozen vineyard--with a grape harvest knife protruding from her chest.