In many countries, zero zero or double zero flour is the finest, best flour on the market. Among narco-traffickers, then, zero zero zero is the nickname for the very purest, highest quality grade of cocaine. From Mexican cartels to Milanese financiers, Guatemalan mercenaries to Ukrainian warlords, Calabrian traffickers to the traders in Wall Street and London who wash the money clean, this is an unforgettable story that goes around the globe and through every level of society to show the extent to which the drug trade affects us all.