<p><b>A <i>GUARDIAN</i> BOOK OF THE YEAR</b><br><br><b>''<i>Gnomon</i> is an extraordinary novel, and one I can¿t stop thinking about some weeks after I read it. It is deeply troubling, magnificently strange, and an exhilarating read.'' Emily St. John Mandel, author of <i>Station Eleven</i></b><br><br><b>''Nick Harkaway¿s most ambitious novel yet. [A] story of near-future mass surveillance, artificial intelligence and human identity ... An amazing and quite unforgettable piece of fiction.'' <i>Guardian</i></b><br><br>''<b>Harkaway dazzles</b>.'' <i><b>Daily Mail</b></i><br><br><b>''Wonderfully good.'' </b><b><i>Sunday Times</i></b><br><br><b>Near-future Britain is a state in which citizens are constantly observed and democracy has reached a pinnacle of ''transparency.'' Every action is seen, every word is recorded and the System has access to thoughts and memories.</b><br><br>When suspected dissident Diana Hunter dies in custody, it marks the first time a citizen has been killed during