At 25, Joanne Rowling had the idea that would change her life…months later, her mother suddenly dies and Rowling's world falls apart. Against incredible odds, J.K. Rowling transforms herself from a destitute and depressed single mother to the world's first billionaire author. In JK Rowling: Behind Closed Doors, meet the woman who created the $25 billion Harry Potter franchise – and inspired a generation to read.