This, the twenty-seventh volume in the annual series of publications by the American Society for Political and Legal Philosophy, features a number of distinguised contributors addressing the topic of criminal justice. Part I considers "The Moral and Metaphysical Sources of the Criminal Law," with contributions by Michael S. Moore, Lawrence Rosen, and Martin Shapiro.The four chapters in Part II all relate, more or less directly, to the issue of retribution, with papers by Hugo Adam Bedau, Michael Davis, Jeffrie G. Murphy, and R. B. Brandt. In the following part, Dennis F. Thompson, Christopher D. Stone, and Susan Wolf deal with the special problem of criminal responsibility in government—one of great importance in modern society. The fourth and final part, echoing the topic of NOMOS XXIV, Ethics, Economics, and the Law, addresses the economic theory of crime. The section includes contributions by Alvin K. Klevorick, Richard A. Posner, Jules L. Coleman, and Stephen J. Schulhofer.A valuable bibiography on criminal justice by Andrew C. Blanar concludes this volume of NOMOS.