Spoilers
“Guns ‘R’ Us”

Honestly, there has never been a more sinister ending to this show than the end of this one. Watching Zack methodically find the key to his father’s gun drawer and then take it from the drawer, point it into the air and make a shooting sound. He did it with a blank expression and a coldness that we have never seen in Zack. It was chilling.
Things escalated big time. It started with Matthew being bullied by some high schoolers. He builds a potato gun in order to dent the bully’s car. Instead, it turned out the potato gun was more of a canon and the car crashed, breaking the bully’s back.
Matthew is arrested, but gets a lighter sentence. Then, the bully’s brother shows up at the school with a handgun and shoots Matthew.

Matthew is rushed to surgery and his life is saved, but he was potentially paralyzed. While Jimmy was out with Matthew, Maxine became the acting sheriff and started some drastic measures about the proliferation of hand guns in the high school in Rome.
This is such a good episode with so much tension. There was also some conflict with Wambaugh and Kimberly which made perfect sense. This was great writing with some stellar acting from everyone on the cast. It was truly some great TV.