The ruins of the World Trade Center were still burning when federal agents arrested two men at Kennedy Airport who were found with more than $140,000 hidden in cardboard boxes with honey jars bound for Yemen. For the agents, aware that terrorists were said to use honey shipments to hide money, that slender lead could not be ignored. If the world was suddenly different for everybody back then, in October 2001, with federal agents and prosecutors both properly alarmed and also under sudden pressure to make terrorism cases, they still relied on old techniques developed in generations of Mafia and...