In recent years, mass casualty attacks have shaken the world, from acts of terrorism to school and workplace shootings. Mass Casualty: The Rise of Lone Actors unravels the complexities behind these tragedies, delving into the motivations of perpetrators and the societal forces that shape them.Drawing on the latest research and real-life cases, this book examines the interplay of personal, social, and ideological factors that drive lone actors. It explores the latest prevention strategies employed by law enforcement, mental health professionals, and policymakers to mitigate the risk of future attacks. Through a thoughtful analysis of case studies, Mass Casualty raises critical questions about the roots of violence: How does childhood upbringing shape pathways to harm? What role does societal culture and technology play in fostering violent behaviour? This thoughtful analysis offers readers a comprehensive understanding of lone actor violence, alongside practical strategies to address its prevention, response, and aftermath.