This handbook provides readers with coverage of the various interview and interrogation techniques used across the world with victims, witnesses, and suspected offenders. It includes exclusive coverage on countries rarely, if ever, previously reported upon in the literature to any substantive depth.Bringing together a collection of chapters from over 40 countries, this handbook advises and explains the practices used in crime interviewing and informs the reader of contemporary developments hitherto unreported in any current book on interviewing and interrogation. In doing so, the Routledge International Handbook of Investigative Interviewing and Interrogation showcases global exemplars of evidence-based practice informed by scientific research. Building on recent research, including protocols developed in a variety of countries, this book is particularly timely in the wake of the "Mendez Principles", a set of principles developed by the UN (i) to counter the ill-treatment of suspects during police questioning and (ii) to gather more reliable information.This handbook will be an essential reference text across criminology, criminal justice, policing and investigation studies, and law.