High tech finance and sophisticated computer programming combine in this terrifying and fiendishly smart new novel from Robert Harris. Dr. Alex Hoffmann stays out of the public spotlight, but within the secretive inner circles of the ultra-rich he is a legend. And now he has developed a revolutionary form of artificial intelligence that predicts movements in the financial markets with uncanny accuracy. As a result, his Geneva-based hedge fund is poised to make billions. But one morning before dawn, a sinister intruder breaches the elaborate security of his lakeside mansion. So begins a waking nightmare of paranoia and violence as Hoffmann attempts, with increasing desperation, to discover who is trying to destroy him.