The book is based on the juvenile delinquency and youth unrest analysis of crimes in the four major slums in Nairobi, Kenya. The book objectives included the identification of the nature, typology, and causes of youth crimes and a description of their preventive measures. Juvenile delinquency is youth abnormal behavior, which can be proven to be dangerous to society. Juvenile delinquency is a serious problem of the modern world societies; this is the result of speedy urbanization and industrialization of our times. The youth moving from rural areas to the cities, end up living in city slums are highly vulnerable. Dr Ndikaru Wa Teresia elucidates that youth crimes are quite rampant in the slums of Nairobi and manifested in a multiplicity of forms, namely, illicit brews, assault, burglary, robbery, rape, and even murder. The crime rates in the slums led to high mortalities, loss of property and the general increase in lawlessness. The book identified remedial measures, among them community policing, police patrol and community guards. The book will be useful to university students.