Jo Glanville meets Berliners who have researched the stories of the Jewish families who once lived in their homes. Marie, Hugh, Anke and Matthias all became fascinated by the history of the families who lived in their flats before them when the Nazis were in power and wanted to find out what happened to them. Their discoveries are an intimate portrait of how lives were turned upside down and offer a new way of honouring the memory of Berliners who lost everything in the Holocaust. Jo visits one of the surviving residents - 95-year-old Ruth, now living in the UK, who vividly remembers what it was like to grow up in Nazi Germany. She tracks down the house in Berlin where her own mother spent part of her childhood. It is a journey that uncovers the past through forgotten family stories, revealing how the Nazis deprived Jews of the right to live in their homes.