This book offers a unique perspective on reimagining the youth justice system by drawing on diverse international models of justice and applying a scientific lens to core global youth justice issues. Unlike existing works that focus solely on either reimagining the system or addressing global issues, this volume pioneers an exploration of how an evidence-based, reimagined system intersects with and addresses central concepts and topics from a global perspective. Drawing upon contemporary evidence, this book dissects and challenges longstanding presuppositions in youth justice, ranging from the nature of youth offending to responses to it, and highlights the crucial role of scientific insights in shaping these domains.With a focus on core global issues such as the school-to-prison pipeline, gang culture, the radicalisation of youth, child soldiering, and the distinctive category of child victim-offender overlap, this comprehensive work serves as a vital resource for scholars, students, policymakers, and practitioners alike. By fostering dialogue between empirical evidence, varied justice models, systemic organisational structures, and pressing global issues, this book aims to provoke critical reflection and drive transformative change in the field of youth justice.