An instructive and entertaining book for those public and private investigators who are potential undercover agents, this book approaches the topic from three angles: how to handle informants, how to investigate suspects, and how to be an undercover agent. Undercover places emphasis on the law enforcement agent but does not overlook the private investigator who may be assigned to work in an undercover role in business or industry. The first edition of this book quickly became the classic text for a whole generation of law enforcement personnel, and the name Carmine Motto, now retired from...