"When Jennifer Lunden became chronically ill after moving from Canada to Maine, her case was a medical mystery. Just 21, unable to hold a book or stand for a shower, she lost her job and consigned herself to her bed. The doctor she went to for help told her she was “just depressed.” After suffering from this enigmatic illness for five years, she discovered an unlikely source of hope and healing: a biography of Alice James, the bright, witty,...