This book covers every aspect of the informant and cooperating witness dynamic a controversial technique shrouded in secrecy and widely misunderstood. Quoted routinely in countless newspaper and magazine articles, the first edition was the go-to guide for practical, effective guidance on this tricky yet powerful tactic. Extensively updated, topics in this second edition include changes in the FBI's informant program, changes brought on by immigration reforms, recent high-profile cases, and the changing nature of compensation and cooperation fees. It also examines the management of informant-driven search warrants and challenges posed by fabricated information.

Attorney Dennis G. Fitzgerald is a retired U.S. Drug Enforcement Administration (DEA) special agent, and a former City of Miami, Florida, Police vice and narcotics sergeant and police training instructor. During his law enforcement career, he recruited and operated criminal informants and cooperating witnesses. He also supervised investigators under his command in their operation of informants. He is currently a trial consultant specializing in criminal cases that have relied on informants and cooperating witnesses and is also an international criminal law advisor.