A navy commander's murder leads the team to a mysterious manuscript and a possible threat to classified military secrets.

Gibbs is suspicious when Vance asks him to interrogate a teenage boy accused of killing his retired Marine father.

The brutal murder of a former investigative assistant is connected to a crew planning to rob a woman's warehouse; a new special agent (Sarah Jane Morris) arrives at the office.

The NCIS team has to find a ruthless murderer after the dismembered fingertips and teeth of a murdered Marine are found in a pickpocketer’s stolen purse

After a suicide bomber tries to assassinate the Belgravian Defense Minister, the team must protect his daughter, who is studying in the U.S.; Gibbs looks into the death of a Marine who was killed in the bombing.

While investigating a naval commander's death, the team undergoes required psych evaluations.

The NCIS team springs into action to find the assailant responsible for beating a Marine to death in his own backyard

bby becomes fixated on solving a murder; DiNozzo's latest fling leads to an interesting Halloween.

The team investigates a bomb tech's guarded personal life after she is attacked.

A girl's kidnapping turns into something bigger when her grandfather complicates the investigation.

Gibbs must take desperate measures to protect his loved ones with Paloma Reynosa still on the loose.