I first read about the Oeuvre de Secours aux Enfants, the OSE, or Children's Rescue Society when I was researching a previous book, The Forgotten Children which was published in 2023. I was fascinated by the story of the OSE and was keen to write about it again. So, my latest book, Once We Were Sisters , is partly set in Chateau de Chabannes, near Limoges, which the OSE used to hide Jewish children during WW2. The OSE was a charity, founded in 1912, to help Jewish children