This comprehensive volume explores the impact of emerging technologies designed to fight crime and terrorism. It first reviews the latest advances in detecting deception, interrogation, and crime scene investigation, before then transitioning to the role of technology in collecting and evaluating evidence from lay witnesses, police body cameras, and super-recognizers. Finally it explores the role of technology in the courtroom with a particular focus social media, citizen crime sleuths, virtual court, and child witnesses. It shines light on emerging issues, such as whether new norms have been created in the emergence of new technologies and how human behaviour has shifted in response. Based on a global range of contributions, this volume provides an overview of the technological explosion in the field of law enforcement and discusses its successes and failures in fighting crime. It is valuable reading for advanced students in forensic or legal psychology and for practitioners, researchers, and scholars in law, criminal justice, and criminology.