'Meanwhile, successful fiction writers such as Norman Mailer and Truman Capote dove into journalism with zeal and facility. Capote went so far as to straight-facedly invent a new category—the nonfiction novel—with his true crime saga, In Cold Blood. “He improves on the poverty of God’s own imagination,” as Wyatt Cooper artfully phrased it.'
https://lithub.com/the-art-of-hanging-out-on-the-golden-age-of-the-celebrity-profile/