This book delivers a comprehensive, in-depth study of the transfer of criminal proceedings, positioning it as an essential instrument of international legal cooperation and transnational criminal justice in an era of cross-border crime. It explains how transferring criminal cases between jurisdictions strengthens the efficiency of justice, safeguards fundamental rights, and upholds the ne bis in idem principle, ensuring no individual is tried twice for the same offense. By concentrating proceedings in the most appropriate jurisdiction, the mechanism reduces duplication, closes prosecution gaps, and builds mutual trust among states while respecting state sovereignty and advancing global justice and human rights. The book offers a clear, practical comparison between transfer of proceedings and other cooperation tools—including extradition, mutual legal assistance, spontaneous transmission of information and transfer of enforcement of sentences—highlighting the unique advantages of international cooperation in criminal matters and the legal frameworks that support it. Rare in scope and depth, it combines theoretical foundations with real-world applications, addressing a significant gap for legal professionals, prosecutors, judges, academics, and students of criminal law and procedure who navigate the complexities of international prosecution, evidence law, and comparative criminal procedure. As a forward-looking roadmap for policymakers and practitioners, this publication demonstrates why the transfer of proceedings is more than a technical tool: it is a cornerstone for combating globalized crime, avoiding impunity, and ensuring fair, effective, and rights-based outcomes across legal systems.

Andrey Borges de Mendonça is a Federal Prosecutor in Brazil with over 22 years of experience and a solid academic trajectory in criminal procedure. He holds a Ph.D. and an LL.M. in Criminal Procedure from the University of São Paulo Law School, where he has also taught undergraduate and graduate courses. His research focuses on criminal procedure, international cooperation in criminal matters, and evidence law. Mendonça is the author or co-author of more than fifteen books, including International Cooperation in Criminal Procedure: Transfer of Proceedings (2022) and multiple editions of the widely used Manual of the Federal Prosecutor. He has published extensively in leading journals in Brazil and abroad, lectured internationally (Europe, Asia, Africa, and Latin America), and served on expert committees shaping legislative reforms, such as money laundering laws. He has received national and international awards, including recognition from the International Association of Prosecutors.