A series of fire drills leads Veronica to discover that Neptune High has been receiving bomb threats, so she enlists Wallace and Mac's help to investigate classmates who could pose a serious threat to the school, including new student Ben. Meanwhile, Keith stuns Veronica with the news of who he's been secretly dating. Later, Duncan confronts Veronica about her ongoing investigation into his sister's death.
Elenco: Kristen Bell , Jason Dohring , Percy Daggs III , Francis Capra , Enrico Colantoni , Teddy Dunn , Ryan Hansen , Tessa Thompson , Kyle Gallner , Julie Gonzalo , Chris Lowell , Tina Majorino , Michael Muhney , Lucy Lawless , Brandon Hillock .