The acclaimed, bestselling author—winner of the PEN/Faulkner Award and the Orange Prize—tells the enthralling story of how an unexpected romantic encounter irrevocably changes two families’ lives.One Sunday afternoon in Southern California, Bert Cousins shows up at Franny Keating’s christening party uninvited. Before evening falls, he has kissed Franny’s mother, Beverly—thus setting in motion the dissolution of their marriages and the joining of two families.Spanning five decades, Commonwealth e