The team searches for new leads when an undercover mission to apprehend a businessman who's committing acts of terrorism to manipulate the stock market is compromised.
Bishop is more determined to avenge her boyfriend's murder when the team finds a new lead in the Chen case. In the meantime, Torres teaches his fellow agents the art of pick-pocketing.
The stress of McGee and Delilah's upcoming wedding lands Delilah in the hospital; the NCIS team investigates the mysterious death of a healthy, young petty officer aboard a Navy destroyer.
Gibbs, McGee and Torres travel to a remote area of Paraguay, controlled by a violent group of rebels, in an attempt to locate a missing Navy Seal who disappeared during an unsanctioned trip.
The team continues their search for Gibbs and McGee two months after they went missing fighting rebels in Paraguay; Vance and Torres are summoned to a congressional hearing regarding the fallout from the Paraguay mission.
NCIS investigate the body of a murdered Navy lieutenant, who disappeared over a year ago; Gibbs and McGee must pass a psych evaluation to officially resume working.
The NCIS team, including recently transferred Special Agent Jacqueline Sloane, investigating the kidnapping of a sailor during a storm that shuts down Washington DC.
After Reeves sees his friend get kidnapped, the NCIS team discovers the primary suspect disappeared two days ago with confidential military information. Also, a photo from McGee's teenage years becomes a popular meme.
After a petty officer is found murdered, McGee spends hours on the victim's ham radio trying to locate a key witness. Also, Palmer asks co-workers to donate to a charity that builds playgrounds for kids of all abilities.
An NCIS person of interest in a bribery and fraud case is found murdered after a runner is led to his body by a strange voice. Also, McGee and Delilah disagree on whether to find out the baby's sex.
Turkey day plans are on hold while tracking international arms dealer Andre Yorka, who recently murdered an MI5 officer who was Sloane's close friend. Also, Abby races Delilah to the hospital when labor for the twins starts 3 weeks early.
Torres and Sloane run protection detail for a U.S. senator in Afghanistan during the holidays and must return to the States when they learn the senator's son is in the ICU.