An old family friend pleads with Gibbs to join him on a road trip to search for a missing military ID bracelet; a Navy lieutenant in NCIS protective custody is poisoned by an infamous drug dealer.
NCIS episode guide
The secretary of defense shuts down Gibbs' murder investigation and demands that McGee and Torres be arrested for their actions in the case.
The team's holiday plans are put on hold when a murder investigation leads to the discovery of a newborn baby who has no identification and no apparent ties to a family.
The team begins an undercover stakeout when their lead suspect in an old unsolved case is released from prison.
McGee and Bishop travel to Afghanistan after a murder case in the states is linked to a string of soldiers killed by friendly fire overseas; Kasie leaves the lab and accompanies Torres into the field to process additional forensic evidence.
A street artist's mural is stolen, and the investigation leads to a conspiracy regarding a Navy contractor and the safety of ocean mammals; Bishop shares a special connection with the street artist.
After NCIS arrives at a Halloween crime scene, Torres recognizes the victim as a friend from federal law enforcement training; Jimmy thinks his lab is haunted by ghosts after objects keep mysteriously moving.
After a 50-year-old tape recording left by a murder victim is found, the team tries to exonerate the Marine serving a life sentence for the crime.
Gibbs' quiet vacation at his remote cabin is interrupted by a call from NCIS asking for his help to locate a robber hiding in the woods near him.
An agent is starstruck after the team investigates an explosion outside the home of a Navy SEAL and his wife, a popular reality TV star; Vance continues physical therapy for the injuries sustained when he was held hostage.
A Navy lieutenant is found murdered in his hot tub; the team interviews families in the victim's peculiar neighborhood; Torres must face the consequences after a volatile night out with Palmer.
Gibbs is assigned the role of acting director while the team searches worldwide for Director Vance's whereabouts.