This book addresses the numerous substantive and procedural issues that arise in the investigation, prosecution, and defense of tax crimes and related offenses. The early chapters of the book map the topography, providing an overview of criminal tax, describing the crimes under the Code and related crimes under other statutes, and developing the elements of and principal defenses to tax crimes. The middle chapters take a "life cycle" approach, tracking the stages of a criminal tax case from investigation to pretrial, trial, post-trial, and sentencing. Subsequent chapters address ancillary issues such as the forfeitures, disabilities, publicity, ethics, and civil tax liability and penalties. The concluding chapter summarizes the course and ties the various topics together with a comprehensive problem.