Perhaps the last Washington secret is how the Federal Reserve and its enigmatic chairman, Alan Greenspan, operate. In Maestro, Bob Woodward uses his proven interviewing and research techniques to take you inside the Fed and Greenspan's thinking. We listen to the Fed's internal debates as the American economy is pushed into a historic 10-year expansion while the world economy lurches from financial crisis to financial crisis. Greenspan plays a sometimes subtle, sometimes blunt behind-the-scenes role. He appears in Maestro up close as never before -- alternatively nervous and calm, plunging into mathematics one moment and politics the next, skeptical, dispassionate, always struggling -- often alone. As Greenspan tells himself, "If you're not nervous, you shouldn't be here."