Family-owned business enterprises, World War; 1939-1945, Parent and adult child, Americans, British 

On Sarah Whitfield's seventy-fifth birthday, memories take her back to New York in the 1930s. To a marriage that ends after a year, leaving Sarah shattered. A trip to Europe with her parents does little to raise her spirits, until she meets William, Duke of Whitfield. In time, despite her qualms, William insists on giving up his distant right to the British throne to make Sarah his dutchess and his wife.

On their honeymoon, the newlyweds buy an old French chateau, but not long after, the war begins. William joins the allied forces, leaving Sarah, their first child, an infant, and their second child on the way, in France. After the Nazi forces take over the chateau, Sarah continues to survive the terror and deprivation of the Occupation, unwavering in her belief that her missing-in-action husband is still alive.