An ex-Soviet KGB agent details his primary mission to work undercover in the United States for over a decade and discusses his change of allegiance and defectio

Deep Cover, a New York Times non-fiction bestseller, is a first-hand account of how the CIA, State and Justice Departments teamed up to destroy a DEA undercover

Undercover FBI Special Agent Donnie Brasco journeys to Florida to investigate a violent political conspiracy that has already cost the life of a fellow agent.

Undercover corporate investigations are being conducted in alarming numbers. After the collapse of the Soviet Union and the end of the Cold War, there was a sud

This guide covers setting up, staffing and securing a police undercover intelligence unit; building trust and interagency cooperation; informants, informers and