When should we make use of the criminal law? Crimes, Harms, and Wrongs offers a philosophical analysis of the nature and ethical limits of criminalisation. The authors explore the scope of harm-based prohibitions, proscriptions of offensive behaviour, and 'paternalistic' prohibitions aimed at preventing self-harm, developing guiding principles for these various grounds of state prohibition. Both authors have written extensively in the field. They have produced an integrated, accessible, philosophically-sophisticated account that will be of great interest to legal academics, philosophers, and advanced students alike.