Sister Helen Prejean is best known for her 1993 memoir, Dead Man Walking, about her role as a spiritual adviser to a convicted killer on death row. The story was adapted into an Oscar-winning film starring Susan Sarandon and Sean Penn. Prejean has accompanied six prisoners to their executions and has been at the forefront of activism against the death penalty.
In 1943, theologian Reinhold Niebuhr wrote the Serenity Prayer, an appeal for grace, courage and wisdom that's become a mantra of Alcoholics Anonymous meetings and appealed to people around the world. We speak to Niebuhr's daughter, Elisabeth Sifton, whose book explores the circumstances that led her father to write the prayer.