This work is a carefully edited, student-friendly law school casebook that presents the substance of judicial reasoning. Students are given as much as they need and no more: background information from secondary stories has been added when necessary for clarity; superfluous facts have been omitted; and most citations and footnotes have been removed. Includes considerable material illustrating the effect (or relative lack of effect) upon judicial thinking of Model Penal Code formulations of the culpability requirements. Particular attention is also paid to the growing importance of federal criminal law, particularly the area of RICO prosecutions and white collar crime generally.