It was a beautiful, breezy, yellow-and-green afternoon. . .” This is how Abby Whitshank always begins the story of how she fell in love with Red that day in July 1959. The Whitshanks are one of those families that radiate togetherness: an indefinable, enviable kind of specialness. But they are also like all families, in that the stories they tell themselves reveal only part of the picture. Abby and Red and their four grown children have accumulated...