The book examines the complex and often paradoxical relationship between law enforcement and the individuals it seeks to control. Sir Leon Radzinowicz, a distinguished historian of crime and punishment, delves into historical instances and theoretical frameworks that illustrate how the very mechanisms designed to uphold the law can become entangled with criminal activity. The work scrutinizes the societal forces and institutional dynamics that contribute to this intricate interplay, questioning the efficacy and ethical implications of the legal system's engagement with crime.

This seminal work by Sir Leon Radzinowicz is recognized for its rigorous historical analysis and critical examination of the criminal justice system. Scholars in criminology and legal history frequently cite its nuanced exploration of the symbiotic and often problematic relationship between law enforcement and the subjects of its authority. The book is regarded as a foundational text for understanding the complexities inherent in the application of law and the potential for its subversion or co-option.