The king was going mad . . . So begins Polly Schoyer Brooks's account of one of history's most compelling stories and one of the world's most popular heroines-Joan of Arc. Brooks tells us of a fifteenth-century France ravaged by war, plague, and religious conflict; of a king who suffered fits of madness and his weak son who made a disappointing successor; and of a peasant girl from the countryside who accomplished what appeared to be miracles by...