So It Goes
Season 12, Episode 3
Ducky returns to London after a case reveals a connection to his estranged childhood best friend. Agent Bishop accompanies him on the trip, and they interview his friend's family and coworkers. Meanwhile, Ducky recalls the choices he made in the past and the impact they've had on his adult life.
A Navy lieutenant is murdered on his way to a private meeting with the President. The NCIS team try to determine if the death was part of a recent series of muggings in the area or if it was a targeted hit to keep intelligence secrets.
Season 12 begins with Gibbs and McGee traveling to Russia to escort home an NCIS computer engineer who is connected to classified intel. But the mission is compromised, and the trio go off the grid while being hunted by a Russian mercenary group. Back at home, the NCIS team race to find their missing colleagues.