Paris, July 1942: Sarah, a ten year-old Jewish girl, is taken with her parents by the French police as they go door to door arresting Jewish families in the middle of the night. Desperate to protect her younger brother, she locks him in a cupboard - their secret hiding place - and promises to come back for him as soon as they are released.
Sisty years later, Sarah's story intertwines with that Julia Jarmond, a journalist investigating the round-up. Sarah's Key is an emotionally gripping story of two families, forever linked to, and haunted by, one of the darkest days in France's past.