Mark Bruce Rosin is the author, co-author, or editor of 15 nonfiction books on diverse subjects, including self-help, memoir, medicine, feminism, and education. He is also the screenwriter and producer of the 2017 film 55 Steps, which is based on a landmark civil rights case and stars Helena Bonham Carter and Hilary Swank. He was associate literary editor and a contributing editor at Harper’s Bazaar and a senior editor at Parents.