Book excerpt: Organised crime has become a major problem globally. Its negative impact on economies, societies, politics, human rights and security is profound: fraud, money laundering, drug, arms and human trafficking, and collusion with both law enforcement and terrorists, for example, are all significant issues. Yet specialists disagree not only on the scale and nature of organised crime, but even on its definition. This Advanced Introduction to Organised Crime explores these disagreements, examines the nature and causes of contemporary organised crime, and offers constructive suggestions on how to counter it.