A HARROWING JOURNEY INSIDE THE HIDDEN WORLD OF DRUG CARTELS BY ONE OF THE TOP CRIMINAL INFORMANTS IN U.S. LAW ENFORCEMENT HISTORY.The men he put behind bars know him as Roman Caribe or one of the dozens of other aliases he has used undercover. His handlers in the DEA, ICE, and FBI know him as Confidential Source Ninety-Six, or C.S. 96, named for the year he confronted the sins of his life atop a massive drug distribution ring and flipped, becoming law enforcement's...