The war on drugs is powerfully dramatized in Winslow’s ambitious and gritty latest book. Art Keller is a brilliant DEA agent who sometimes breaks the rules to serve justice. Adam Barrera is an urbane drug dealer whose charm masks his brutality. Nora Hayden is a high-class call girl whose heart is in the right place. And Sean Callan is a taciturn mob hit man, a stone-cold killer who just wants out of the life. Winslow follows these four characters and assorted extras as they cross paths over three decades in the international drug trade, from Keller’s first encounter with Barrera in 1970s Mexico, through the drug cartels’ corruption of government officials in the U.S. and Mexico governments, to a final showdown on the U.S. border in 1999.