Number the Stars is a novel about the Holocaust of the Secon World War by award-winning author Lois Lowry. It focuses around ten-year-old Annemarie Johansen, who is living in Copenhagen, Denmark, in 1943 and is caught up in the events surrounding the rescue of the Danish Jews. She and her family risk their lives to help Annemarie's best friend, Ellen Rosen, by pretending that she is Annemarie's older sister who died earlier in the war as part of the Resistance.