Dr. Stuart Logan is both cheating on his wife with a younger woman AND he is cheating one of the Ph. D. students and instructors there, Van Fowler, by stealing his ideas and taking credit for his book. To add insult to injury Logan is rude to both his wife and the instructor from whom he is stealing.
In a side plot a young man, Bob Hyatt, is worried he'll not pass his finals and graduate, thus disappointing his father. His roommate offers him the easy way out - the answers to the hardest final exam he'll take - but he turns it down. Dr. Logan finds out about the theft of the answers and tells everybody in the class that he is holding their exams and will expel everybody whose answers align with the stolen answers. Given Dr. Logan's personal and professional behavior I'm surprised he is so devastated by his own cheating students. But he doesn't have time to be shocked because, later that night, he is murdered.
Chance would have it that Perry Mason is on campus for a fund raiser and reunion - this was Perry's alma mater - so he is on the case when cheating educator is killed and Van Fowler is arrested for murder.
This was one of the few Perry Mason episodes to deal with the angst of the younger generation. He has a conversation with young Bob Hyatt, who might be able to shed some light on who did kill the professor, but he'd have to rat out his cheating best friend in the process. Hyatt then enumerates his list of complaints against Perry's generation, which grew up in the Great Depression and fought WWII. Of course getting expelled from college in 1965 has its own problems - primarily that you are likely to find yourself in Vietnam with a rifle slung over your shoulder.
This wasn't a great episode of Mason, partly because Hamilton Burger is not the prosecutor due to the distant jurisdiction.