Early in 1815, Louisa Catherine Adams and her young son left St. Petersburg in a heavy Russian carriage and set out on a difficult journey to meet her husband, John Quincy Adams, in Paris. She traveled through the snows of eastern Europe, down the Baltic coast to Prussia, across the battlefields of Germany, and into a France then experiencing the tumultuous events of Napoleon's return from Elba. Along the way, she learned what the long years of Napoleon's...