Kit Kittredge: An American Girl (2008)

In 1934, 10-year-old Kit Kittredge lives in Cincinnati with her father, who has lost his car dealership due to the Great Depression. Kit's mother and older brother have gone to find work, leaving Kit to take care of their home and boarders. When the family's money is stolen, Kit decides to investigate the case and become a reporter. Along her journey, Kit encounters various challenges and forms unlikely friendships while trying to uncover the truth.