We find Gibbs in Mexico being held captive by Paloma Reynosa who's the head of the Reynosa cartel and the daughter of the man Gibb's killed. Lt. J.P. Dean, once Colonel Bell's right hand man now loyal to Reynosa was the one who captured Gibbs outside of Franks' home and handed him over to Reynosa. We also discover that Alejandro Rivera, Justice Department in Mexico, is Paloma Reynosa's brother. They both want Gibbs to suffer in different ways for killing their father. Alejandro wants to put him on trial for murder in a Mexican court and is waiting Abby's report on her findings. They threaten Gibb's that if he doesn't do as they say they are going to keep him alive to see all his loved ones suffer. Vance sends the team to Mexico to retrieve the bodies from the massacre outside Frank's house and when Ziva and Tony get there out walks Gibbs from the cargo hold. Tony and Ziva suspect that Gibbs is in danger after Gibb's mentions Rule 41: "If it seems someone is out to get you, they are." Is Gibbs really free or is he being tested? A gun battle erupts between Lt. Dean and NCIS when his plane arrives in Virginia and he fails to surrender, Dean is ultimately killed. Gibbs secretly goes to the evidence locker and retrieves a package from one of the crates used to store the bodies. Was his test to become a drug runner for the Reynosa cartel? In the end, Vance enlists Tony to go to Mexico to hunt down Alejandro only to be stopped by Franks who wants to finish the job. We also learn that M. Alison Hart prevents Abby's file, which identifies Gibbs as the sniper that killed Pedro Hernandez, from being sent to Rivera. Gibbs is forced to re-evaluate his rules. Ziva becomes an official citizen of the United States.