The book Sarah's Key by Tatiana De Rosney will break your heart. Seriously. I will.
It starts off a little slow, but then it will completely captivate every bit of you. It tells the story of a young girl named Sarah, a Jewish girl sent to an internment camp in France, and of the key that locks a special closet in her home. Her story is carefully intertwined with that of an American Journalist who's family moves into the home that Sarah's family once inhabited.
This is a sad and beautiful story, it encompasses so many aspects of the human experience. Love, loss, betrayal, and a certain essence of hope. I highly recommend this novel to any reader, but be prepared for a little anguish.