It seems that more than schoolboy pranks are going on at a Cabot Cove prep school when a teacher is murdered.   Sheriff Metzger and Deputy Broom help Jessica solve the murder.

This episode can be streamed on Peacock.

Guest Stars include:
1. Scott Marlowe (Valley of the Dolls (TV)) as Avery Nugent
2. Robert Foxworth (Falcon Crest) as Prof. Harry Matthews
3. Roy Dotrice (Amadeus) as Dr. Myles Purcell
4. Richard Minchenberg (Arli$$) as Irv Tripler
5. Maryann Plunkett (Little Women) as Claire Vickers
6. Nicolas Surovy (Forever Young) as James Ryerson
7. Ethan Embry (Grace and Frankie) as Mike Seresino
8. Dana Barron (National Lampoon's Vacation) as Sarah Tyler
9. Trevor  St. John (The Young and the Restless) as Colin Forbes 

The IMDb page can be found here: https://www.imdb.com/title/tt0653605/