Through interview and case presentations, this volume examines the lives and last days and weeks of several officers, using findings from social media, departmental surveys, medical examiner reports, toxicology reports and interviews with loved ones and colleagues to create a psychological autopsy. With 14 chapters contributed by former law enforcement, researchers, and mental health professionals, it addresses national, state, and local policy implications and strategies, presenting a theory for better understanding and preventing the phenomenon of officer suicide. This volume will be of interest to researchers in policing, to law enforcement and first responder leadership and administrative professionals, and to mental health practitioners and clinicians working with this unique population