The One Where Perry Met Ken
Whilst attending college to study law, under the tutelage of Perry Mason (Raymond Burr), Ken Malansky (William R. Moses) learns that his girlfriend Kimberly (Karen Kopins) was assaulted by another student. Rushing to the mock courtroom on campus to confront him Ken not only finds he's been killed but with Ken's knife leading to him being charged with murder. With Ken needing a lawyer Perry reluctantly agrees to defend him but feels conflicted as the dead man is the son of close friend Frank Wellman Sr. (Brian Keith).
Having only recently come to be a fan of the "Perry Mason" movies I am far from being an expert but can easily spot the significance of "Perry Mason: The Case of the Lethal Lesson" as it was the movie to introduce as to the character of Ken Malansky who would go on to become Perry's reliable investigative partner till the series ended. And having watched some of those later movies before this one you can see how actor William R. Moses grew in to the part, almost nervous in this movie as he tries to establish his character but still having what would become typical traits of always having a woman around.
Aside from the significance of introducing Ken to us "Perry Mason: The Case of the Lethal Lesson" is business as usual as whilst we have Ken having issues including women troubles we have Perry and Della going about, chatting to those involved in the case, making some of them have a bit of a squeaky bum moment as he makes them feel uncomfortable and so on. There is an interesting element which sees Perry at conflict because the victim was the son of a life long friend who can't believe Perry would defend the man charged with murdering his son but in truth it feels more like a role only significant because it gave Brian Keith a part to play.
What this all boils down to is that "Perry Mason: The Case of the Lethal Lesson" has the appeal which made these Perry Mason movies popular audiences with that easy to watch style which meant whilst they keep your attention you don't need to concentrate too hard on them to keep track of what is going on.