After learning the identity of the person behind the bus crash, Veronica tries to warn others. Meanwhile, Keith asks Veronica to help with the Woody investigation.
Veronica investigates her assault. Meanwhile, when one of Veronica and Wallace's stunts affects Alicia's job, Alicia confronts Keith. Later, Aaron hosts a party for Logan.
Veronica debates coming clean to Nicole. Veronica's fidelity is tested. Veronica and Keith discover they aren't the only ones who believe they've found the bomber. A surprising potential client tries to hire Mars Investigations.
An FBI team pursues Duncan after he breaks up with Veronica and flees with Meg's baby. Meanwhile, Wallace reveals the reason he returned to Neptune, and Logan asks Dick for help.
Veronica investigates bomb threats at Neptune High, Keith reveals who he has been secretly dating and Duncan confronts Veronica about her investigation into his sister's death.
Veronica and Keith's client, Daniel Maloof, makes a shocking confession. Sheriff Langdon closes in on her top suspect. Veronica and Matty join forces, just as the whole investigation is flipped on its head.