The book examines the evolution of criminology and criminal justice, each as a social focus and an academic discipline, and provides definitions of terms in each field. It discusses criminology from a teaching perspective and within criminal justice, reviews schools of thought, sociological criminology, and radical and contemporary criminology. A chapter on criminal justice discusses the police component, the courts component, and the corrections and juvenile components. The book compares, contrasts, and intertwines criminology and criminal justice as social focuses and academic disciplines, discusses research and practical applications, and considers their futures. Each chapter includes discussion questions to facilitate critical thinking. Notes, figures, tables, references, bibliography, index