Criminological Theory: The Essentials, Fourth Edition by Stephen G. Tibbetts and Alex R. Piquero is a brief yet comprehensive overview of the major concepts and perspectives of the key theories in the evolution of criminology.Putting criminological theory in context, the acclaimed authors examine policy implications brought about by theoretical perspectives to show students the practical application of theories to contemporary social problems. The new edition has been thoroughly updated with the latest theoretical extensions and empirical research, with links made to specific theories and recent events.