This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book intends to be a working-policy paper for deciding important legal policy issues raised in the "Big Spender" case, in a broader sociopolitical context. It discusses Cheung Tse-keung's life experience, personal character, criminal career, and the investigation, prosecution, and adjudication of the "Big Spender" case. The book outlines in detail the debate in Hong Kong over the "Big Spender" case—what are the issues involved and who are the stakeholders. It presents a general overview of the People's Republic of China (PRC) criminal justice process as it dissects the anatomy of the "Big Spender" case. The book provides a brief historical account of PRC–Hong Kong Special Administrative Region (HKSAR) cross-border police cooperation and judicial assistance negotiations. It also provides a systematic, comprehensive, and in-depth analysis of the applicable Chinese, British, Hong Kong, and international law, bearing on the disposition of the "Big Spender" case.