The purpose of this course is to widen the professional engineer’s understanding of engineering ethics through the consideration of three case studies. The studies are actual espionage cases that have been successfully prosecuted by agencies of the Federal government. Espionage was chosen as the subject of the case studies because it provides exposure to ethical situations that are important but probably unfamiliar to most PEs. The engineering ethics aspects of the cases are developed by showing which standards of conduct for engineers were violated by the actions of the convicted engineers.