This book addresses the phenomenology, demographics, and neurobehavioral aspects of suicidal behavior and its risk factors, underscoring common neurobehavioral threads among different approaches which may underlie such extreme behavior. It additionally provides an overview of new approaches, such as imaging techniques to identify at-risk individuals or in response to drug treatment associated with suicidal behavior, neurodevelopmental approaches, genetic and epigenetic linkages to suicidal behavior, animal models of specific risk factors, as well as potential biomarkers being employed to help assess risk.