"Death by Demographics" is the final TV episode of "Murder, She Wrote" they aired (the previous episode was actually filmed last). But it's not exactly the end of the series, as they made four "Murder, She Wrote" movies which aired following "Death by Demographics". So, it's ALMOST the end of the line for the series. It deserved better than "Death by Demographics".
Jessica is visiting a radio station in San Francisco. Although its format for years has been classical music, it's now being changed to modern music...and the long-time disc jockey, Howard Deems (David Ogden Stiers), is shocked about the change and because he'll be losing his job. So, when someone shoots at a couple of the new talent, the police assume that Howard did it. But, being "Murder, She Wrote", you KNOW someone will soon die and the police's assumptions about the shooter will be wrong.
This is a good episode. My comments above are not because I didn't like it but because it is a great series and needed a powerful ending to the show. Following this show, four made for TV movies were made...and hopefully they'll cap off Jessica Fletcher in a more fitting fashion.