Enslavement: the true story of fanny kemble (2000)

Fanny Kemble is a famous star of the English stage, but while touring the United States, she gives up her career to marry wealthy American Pierce Butler. Moving with him from Philadelphia to his Georgia plantation, Fanny sees slavery firsthand, and her outrage leads her to help the family's slaves in open defiance of her spouse. Undaunted by the consequences, Fanny eventually writes a book that strengthens the anti-slavery movement.