Origin is the story of a writer who faces personal loss at the same time she works on a book based on her unified theory about systems of oppression. Written and directed by Ava DuVernay, the film is adapted from Isabel Wilkerson's best-selling book, Caste: The Origins Of Our Discontents, and dramatizes the book's ideas and the way it comes together. Aunjanue Ellis-Taylor stars as Wilkerson, and also features Jon Bernthal and Niecy Nash-Betts.