<p>Ten years after her death, Princess Diana remains a mystery. Was she &#8220;the people&#8217;s princess,&#8221; who electrified the world with her beauty and humanitarian missions? Or was she a manipulative, media-savvy neurotic who nearly brought down the monarchy? Only Tina Brown, former editor-in-chief of <i>Tatler</i>, England&#8217;s glossiest gossip magazine; <i>Vanity Fair</i>; and <i>The New Yorker</i> could possibly give us the truth.</p>