Undercover narcotics investigators enforce laws involving dangerous drugs, and it takes an extraordinary amount of knowledge, training, skill, personal integrit

Describes Diaz's daring undercover effort to stop New York City kingpin Leroy "Nicky" Barnes, describing his infiltration of the dangerous drug operation and sh

In one of the most illuminating portraits of police work ever, Chief Charles Campisi describes the inner workings of the world’s largest police force and his