Matthew Quirk’s “The Directive,” a sequel to his bestselling novel “The 500,” imagines a heist to steal billions from a trading desk at the Federal Reserve. Jeffrey Brown talks to Quirk about how he researched the high-stakes break-in.

Wall Street money manager Doug Dachille identifies two risk factors for market volatility and argues that unless the Fed has cooked up a new economic therapy to respond to the next bout of deflation, there may be more significant economic…