"Criminalising Harmful Conduct" by Dr. Nina Persak is a comprehensive examination of the criteria for the criminalization of harmful behavior. The book adopts a normative approach and analyzes what foundations should be used for the criminalization of actions, rather than relying on the actual considerations of lawmakers. At its core is the Harm Principle, developed in Anglo-American legal philosophy, and its relevance to the continental debate on criminalization. Dr. Persak provides a detailed analysis of the criteria used to determine 'harm' and the 'interests of others' affected. This critical engagement with the Harm Principle and the various theories of criminalization represents a significant contribution to normative criminal law theory and highlights the connections between Anglo-American and continental approaches.