THE SECRET SISTERS Exploring the timeless themes of family, self, misfortune, and hope that have made the novels of Anna Quindlen and Sue Miller bestsellers, Joni Rodgers's moving and powerful tale tells the story of three women bound together by loss and set free by love.   Pia feels the walls of her life closing in around her, until she discovers a strangely sensual world that leads her to a new existence.   Lily, Pia's brash, tough-talking sister, makes a tragic mistake that leaves her incarcerated, body and soul. But when she finds the last thing she expects—love—she is at last able to face the past.   Beth, married to Pia and Lily's brother, has never been able to admit her own failure as a mother. Finally forced to confront a tragedy of her own making, she discovers that the truth can set her free.