Criminal Law raises hard questions concerning such issues as what acts should be prohibited, and in what circumstances should persons who perpetrate those acts be held responsible for them? Issues of harm and culpability pervade the criminal law, challenging all who seek a principled rather than an ad hoc understanding of the rules that constitute it. Harm and Culpability contains a collection of original papers delivered at Gonville and Caius College, in Cambridge, during a seminar series devoted to the discussion of philosophical issues generated by the criminal law. Papers were presented by some of the leading Anglo-American philosophers, criminall lawyers, and legal theorists and later revised in the light of seminar discussion and editorial guidance. The result is a connected group of essays whose subject matter is topical, and in each case of both theoretical and practical significance.