Book excerpt: Many readers of Nightjohn have wanted to know what happened to Sarny, the young slave whom Nightjohn taught to read. Here is Sarny's story, from the moment she leaves the plantation in the last days of the Civil War, suddenly a free woman in search of her sold-away children. Her search takes her to New Orleans and the home of the mysterious and remarkable Miss Laura. Like Nightjohn, Miss Laura changes Sarny's life, and she helps Sarny pass Nightjohn's gift on to new generations. This riveting saga follows Sarny until her last days in the 1930s and gives readers a panoramic view of America in a time of trial, tragedy, and hoped-for change.