18. Weapons of Class Destruction

Veronica is kissing Leo D'Amato (Max Greenfield) outside her house. After Veronica goes back into her house, Keith announces that he has begun dating Wallace's (Percy Daggs III) mother, Alicia, making things awkward between Veronica and Wallace. Veronica notices a sign outside which says "KillemAll.net". In class, there is a fire drill, and Duncan (Teddy Dunn) says that it is the third one this week. Veronica talks to Principal Clemmons about the fire drill issue, but he doesn't give anything up to her. Later, she notices K-9 units going through the building, though the dogs don't alert on the weed one of her classmates hides on his person.

Veronica, posing as the superintendent, calls Principal Clemmons, who reveals that the school has experienced several bomb threats. She prints the story in the school newspaper, causing chaos at school the next day. Principal Clemmons calls her in again and tells her to stop printing stories. Veronica and Wallace talk to each other while Keith and Alicia watch a movie. Alicia tries to convince Wallace to accept their relationship to no avail. After talking to Mac (Tina Majorino), another student, Pete (Michael McMillian) approaches Veronica to say that he saw two students, Ben (Jonathan Taylor Thomas) and Norris (Theo Rossi) with exploding tennis balls. Wallace places the two students under more suspicion when he tells Veronica about them, and Veronica sees a mysterious countdown timer on the KillemAll.net website.

Duncan and Meg (Alona Tal) approach Veronica, and she tells Meg the general overview of a case where someone has been evading capture and all the tactics they used to do so before Duncan suddenly leaves. Wallace gives Veronica the student file on one of the two students, but his high school records are clean after bullying in junior high. The other student doesn't have a file. Veronica talks to Duncan, who says he knows about her investigation. Duncan scoffs at her findings before he realizes that she suspects him in the murder, reacting with extreme rage before dashing out of the room.

Ben and Norris talk about guns and bombs, leading Veronica to track Ben, eventually seeing him buying fertilizer and taking out a rifle. Ben gets into the car and orders her to drive to the Camelot motel. There, Logan appears and beats him up before it is revealed that the "suspect" is actually an ATF agent. Ben says that he is investigating Norris, but needs her help: Norris has a crush on Veronica, and Ben asks her to get close to him. As she leaves the motel, Veronica and Logan kiss unexpectedly.

Veronica gets an invitation to Norris's house, but she doesn't find any weapons. Veronica calls Mac to help her break into the WiFi before she sees Pete in front of the house. The ATF searches Norris's vehicle and finds fertilizer and a rifle, despite Veronica's convictions that he is not the perpetrator. However, Veronica recognizes them as being the same ones Ben was loading into his car earlier. Veronica calls Pete, and she tells him that she knows he falsely implicated Norris (with the help of the ATF agent) because of terrible bullying in junior high. Meg tells Veronica that Duncan has disappeared after removing $10,000 from the bank. The story involving Norris is published in the newspaper, and, although it leads to all charges against Norris being dropped, it also results in the new journalism teacher's (Joey Lauren Adams) termination.