Criminal Justice, Criminology, Penology and Security are new disciplines taught in Kenyan Universities and Colleges with no specific textbook readily available to students and practitioners. This is the first introductory textbook dealing exclusively with Criminal Justice in Kenya and provides useful information about the workings of the Police, Courts and the Correctional Systems in Kenyan context. It is useful to Probation Officers, Police officers, Children Officers, and students taking Certificate, Diploma and Degree courses in Criminology,Criminal Justice, Penology, Sociology, Social Work and legal Studies with pertinent information in Criminal Justice. It contains concise explanation of the origin, development of departments,peculiarities in Kenya and in East Africa.The authors have paid special emphasis to the Kenyan situation vis-vis the global framework of Criminal Justices. African states have different legal systems and penal or criminal regimes, and their administration. The text incorporates provisions of the New Constitution of Kenya 2010 in relation to Kenya Police Service, Judiciary and Correctional Agencies. Karatina university offers Criminology courses.