This new edition represents a rather substantial revision of the previous work. It contains an even richer and more contemporary set of materials, thus permitting examination in greater breadth and depth than ever before of those issues that are of current major importance in the field of substantive criminal law. Approximately one-third of the principal cases are new and, with rare exception, were decided since publication of the second edition. The notes following the principal cases have been enriched with the discussion of over 180 newer court decisions, as well as with excerpts from about 170 very recent books and law review articles. At the same time, much of the previous material in the notes and questions has been retained because of its continuing value.