John Law, notorious for killing a man in a duel and acquiring a huge fortune from gambling, found a more congenial atmosphere for pursuing his financial visions in the bankrupt court of France's Louis XV. His idea of establishing a bank to issue paper money with credit revived the French economy and earned Law the right to trade in France's vast American territories. Shareholder profits from his company created history's first millionaires and sent Paris into a frenzy of speculation, conspiracies, and conspicuous consumption. Janet Gleeson recreates in lively detail the meteoric rise and spectacular fall of Law's fame and fortune, its repercussions throughout Europe at the time, and its enduring legacy in today's markets.