Angie had come through, however, with the name of a "data dealer" in Tenochtitlán—an old friend of hers whose trustworthiness and discretion she personally guaranteed. This friend—whom Angie referred to only by the nickname of Caco—relied upon a network of contacts throughout Aztlan who gathered hard data, rumor, and gossip the old-fashioned way—by listening to it with their own ears while working their day jobs as servants, shopkeepers, and security guards. Caco paid for this data in peso libres, which had value outside of Aztlan and thus were coveted by those planning on leaving the country—as Caco’s information-gatherers often had cause to do. Caco then brokered this "word on the street" back to Tenochtitlán’s shadow community, swapping information for pesos or sometimes just trading data for data. If anyone could find the skinny on Domingo Vargas, Angie had assured me, it was Caco.