With this thirteenth volume, the series develops from the traditional monograph to the thematic set of essays. The themes germinated and took shape over a two-to-three year period of seminars, a weekend conference and further exchanges of papers, all under the guiding hands of the two editors. The resulting essays challenge the internal and external boundaries of criminal liability, raising in various ways a number of fundamental issues such as the conditions under which conduct may be justified. The authors share an interest in criminal law theory of the philosophical kind, but the theoretical dimensions of the essays open up several issues with distinctly practical implications -- for example, in relation to drug dealing, blackmail, and attempted crimes. Questions of whether or not to criminalize certain conduct also recur throughout the book, and there is some attention to the most appropriate form in which criminalization (or exemption from liability) might be accomplished. With its considered interweaving of theoretical and practical arguments, Harm and Culpability marks a considerable advance in criminal law scholarship.