Suggest a movie title for the following movie plot: In 1942, 10-year-old Sarah Starzynski (Melusine Mayance) hides her younger brother from French police by locking him in a secret closet and telling him to stay there until she returns. She takes the key with her when she and her parents are transported to the Velodrome d'Hiver, where they are held in inhuman conditions by the Paris Police and French Secret Service. The deportees are transferred to the French-run Beaune-la-Rolande internment camp. The adults are deported to the Auschwitz concentration camp, leaving the children in the camp. When Sarah tries to escape with a friend, Rachel, a sympathetic Paris police guard spots them. When Sarah begs him to let them go so she can save her brother, he hesitates then lifts the barbed wire to let them out. Sarah and Rachel fall asleep in a dog house at a farm where they are discovered by the farmers, Jules and Genevieve Dufaure. Despite knowing who they are and the associated danger, the Dufaures decide to help the girls. Rachel is dying, and when they call attention to themselves by calling in a doctor, a skeptical German officer asks them if they know anything about a second Jewish child. The officer begins a search for the second child, only to be interrupted when the French physician carries out the dead body of Rachel. Days later, the Dufaures take Sarah back to her family's apartment building in Paris. Sarah runs up to her apartment, knocking on the door furiously. A boy, 12 years old, answers. She rushes in to her old room and unlocks the cupboard. Horrified by what she finds, she starts screaming hysterically. After the war, Sarah continues to live as a family member with the Dufaures and their two grandsons. When she turns 18, she moves to the United States, hoping to put everything that happened behind her. She stops corresponding with the Dufaures when she gets married and has a son, William. When her son is nine, Sarah still despondent and blaming herself for her brother's death - drives her car into the path of an oncoming truck. It's explained...
The answer to this question is:
Sarah's Key