The gifted and talented teacher, Rod Grayson, was fatally shot by one of his most prized students. Instead of going to trial and serving time, John Christian was sent to a private mental health facility in Dallas, TX. Later on, students from Graysons classroom would see the shooter, John, at the strangest places: including law school.

TW: Gun Violence

PS: So very sorry there is a weird noise at the end of the episode, not really sure what that was. 

Sources:

https://www.texasmonthly.com/news-politics/the-school-shooting-that-austin-forgot/

https://www.michaelcorcoran.net/austins-secret-murder-in-the-classroom-1978/

“21 Witnesses” Crime Show