This book takes an in-depth look at the phenomenon of police officer suicide. Centered on statistical information collected from cases of officer suicide from 2017 to 2019, this volume helps readers understand the circumstances surrounding death by suicide amongst law enforcement personnel and makes recommendations for identification and prevention. 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