The Thought of High Windows

It is an excellent young adult book about the Holocaust. The main character, Esther, is one of a group of Jewish teenagers who manage to escape Germany for Belgium and then France right before the beginning of World War II. With the onset of the war, their situation worsens, and their Red Cross camp offers them no protection anymore. Many perilous and heartbreaking events follow.
The book is based on a true story of a group of children who escaped from Germany and Austria and lived in France in a castle called Chateau La Hille, and even though the characters are fictitious, their actions are based on true accounts of people who survived.
Very good narration and excellent character development.