Written by seasoned drug enforcement officials, this book provides a "cop's point of view" of domestic drug interdiction. It trains the reader to interview suspected drug couriers, ascertain whether an investigation is warranted, and employ an arsenal of investigative tools, including the drug canine. It also shows how to partner with the business community to combat the drug dilemma. Throughout the book, the authors discuss legal aspects and case law to ensure that the narcotics investigator stays within the law. Its comprehensive presentation of proven investigation methodologies will aid law enforcement officers and investigators in the effort to stop narcotics trade in the United States.