A fed up Nancy squeals to the DEA to bust the tunnel while she plays it cool with Esteban. Embracing rehab, Celia sets out to make amends with her family….

Nancy learns that the tunnel is being used for more than drugs. Esteban puts her fears to rest as well as her nagging headache with a strong remedy. Celia’s family…

Nancy follows the tunnel in the back of the maternity shop and sees something she shouldn’t at the other end. Dean takes a new job, leaving Isabelle to live with…

When the murder of an Army veteran puts Beckett on the trail of the man who shot her, Castle must decide how much he’s willing to sacrifice to keep her…

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…

As Veronica learns more about Nicole’s past, her suspicion deepens. A frantic phone call from Paris leads to a search for Matty. Veronica unwittingly does legwork for Leo.

Convinced the bomber is still at large, Veronica visits Chino to learn more about Clyde and Big Dick. Mayor Dobbins’ request for help from the FBI brings an old flame…

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…

When the CIA informs McGarrett that his mother has gone rogue on her undercover mission and may have killed her partner, Steve goes solo to Mexico to bring her home…