In 1974, the New Zealand Police created its most effective weapon yet ? the undercover police officer. Tasked with living as an insider deep within the criminal world, these agents would make friends with society?s lawbreakers ? drug dealers, thieves, murderers, gang members ? in order to secure enough evidence to convict. But for many agents, life in the criminal underworld is addictive. Undercover cops have provided material for countless movies and TV dramas, and their real stories are just as gripping. This series explores what happens to police officers permitted to take drugs and live long-term, elaborate lies in order to catch criminals. Can testimony from these cops hold up in court? Where does the responsibility for the drug abuse and psychological trauma among undercover agents lie? Their answers ? and the stories they tell ? will shock, surprise and inspire.