While Jen attends an Interpol conference in Paris, Gibbs serves as the acting director. When a taxicab delivers a fare to the NCIS headquarters, at the Navy Yard in Washington, DC, the passenger, a Yemini man, is dead on arrival; Tony, Gibbs, and the team investigate. The dead man carries a list of seven names, including his own. Abby identifies the death agent, which is a rare neurotoxin; an unexpected second passenger alights from the taxicab; Jen diverts from Paris to Moscow; the cabbie's plans fall apart at the main gate. Jen gets answers, the gang get answers, and the cab gets answers; some of the answers are unpleasant and inconvenient. Tony and Jeanne discuss plans.
—DocRushing