Judith Regan is “arguably the most successful publisher in the world today, she runs a small imprint with a huge hit rate. So far this year, ReganBooks – part of the HarperCollins empire – has notched up 11 titles in the New York Times bestseller list, including four number ones in the space of six weeks. Even her critics describe her as the smartest woman in publishing. And yet they also have a few more superlatives for her, including the “angriest woman in the media” and – if Vanity Fair magazine is to be believed – a strong candidate for the nastiest person in New York.”