This can't be real, I thought. But I had the same feeling I had whenever Saba told me his stories: that somewhere, somehow, the impossible had happened. Ever since she arrived in Germany on a school trip, Ellie Baum has felt the weight of history on her. After all, she's the first one in her family to return since her grandfather's miraculous escape from a death camp, and in Berlin, pieces of the past - World War II, the Cold War - are still visible...