International interventions in the aftermath of mass violence tend to focus on justice and reconciliation processes, elections and institution-building. The frame of reference tends to be at the state level with insufficient attention paid to the transformations of belief systems and codes of conduct. This book seeks to bridge this divide by offering a trans-disciplinary analysis of the impact of mass crime on the rebuilding of social and political relations. Drawing on historical and more recent cases (including examples from Bosnia-Herzegovina, Burundi, Cambodia, Indonesia, Peru, and Rwanda) the authors examine the impact of mass crimes on individuals, society at large, and the organizations involved in providing assistance in the post-conflict phase.