An Introduction to Criminal Law is an online interactive textbook appropriate for undergraduate criminal justice classes as a core text, or as a supplemental text for 1L law classes. It covers the basic concepts of Criminal Law, including the purposes of punishment, actus reus, mens rea, accomplice liability, homicide, sex crimes, theft crimes, inchoate crimes, defenses, and constitutional limitations on criminal statutes. In addition to this coverage, each chapter provides sample cases, presented in a way to teach students how to read a case and recognize the most important parts, including the issue of the case and the holding.