Sixteen-year-old Catholic Stefania Podgórska has worked in the Diamant family's grocery store in for four years, even falling in love with one of their sons, Izio; but when the Nazis came to Przemsyl, Poland, the Jewish Diamants are forced into the ghetto (and worse) and only Izio's brother Max manages to escape, and Stefania embarks on a dangerous course--protecting thirteen Jews in her attic, caring for her younger sister, Helena, and keeping everything secret from the two Nazi officers who are living in her house.

Based on the true story of Stefania Podgórska. Includes an author's note that outlines the later lives of Stefania, and the many of the other people who appear in the book.