The Key ManBy: Simon Clark, Will Louch AS FEATURED IN BBC TWO'S BILLION DOLLAR DOWNFALL: THE DEALMAKER DOCUMENTARY Two Wall Street reporters investigate the man entrusted with millions to make profits and end poverty but now stands accused of masterminding one of the biggest, most brazen frauds in history. 'Gripping' Guardian *** Arif Naqvi was a man with an immeasurable dream: to end world suffering, poverty and disease. His vision? Capitalism used for good,