M ria M di (1898-1970) was a Roman Catholic Hungarian physician living in Budapest during World War II. Stuck in the city, she vowed to become a witness to events as they unfolded and began keeping a diary to chronicle her everyday life, as well as the lives of her Jewish neighbors, during what would be the darkest periods of the Holocaust. From the time Hungary declared war on the United States in December 1941 until she secured an immigrant's visa...