For all those who have occasionally wondered just what might lie behind the eternal sunglasses of the famously scary Anna Wintour, the author of a new biography of the longstanding editor-in-chief of American Vogue has momentous news: it seems that there is, after all, “a person there” (as opposed, you understand, to a robot programmed by the ghost of Oscar de la Renta). But while journalist Amy Odell has indeed found several witnesses willing to testify on the record to the existence of this corporeal being, she is, alas, unable to go much further; to explain what motivates Wintour, let alone to reveal what keeps her awake at night (assuming she can tell it’s the night). Her book might well be based on 250 sources and come with notes longer than the concordance to Thomas Malory’s Le Morte d’Arthur. However, full disclosure, it is not – unless, of course, the reader was hitherto unaware that Wintour’s “ability to empathise is debated”.