NCIS investigates a private plane crash after a Navy pilot says she saw an unidentified object prior to the crash. Pride suffers from insomnia and nightmares as a result of being kidnapped and drugged last year.

Pride travels to New York after new evidence links to a 20-year-old cold case from his time at Jefferson Parish Sheriff's office.

The team uncovers a sinister plot by a private detention center contracted by the government to house undocumented immigrants; Lasalle and Sebastian travel to Alabama to search for Lasalle's missing brother.

Navy Lieutenant Max Landry asks the New Orleans field office for help when he suspects his girlfriend is a spy. Also, Lasalle faces another devastating dead end as he searches for his brother’s last known whereabouts.

Lasalle hopes to avenge his brother’s murder by tracking a drug ring in Alabama he believes is responsible. Also, when Pride assists with the case, he crosses paths with Eddie Barrett (Eddie Cahill), an elusive individual who knows more than he is sharing.

After a natural gas explosion at a movie theater, the NCIS team discovers the gas company has been hacked and more explosions could be triggered.

Sebastian calls the NCIS team to assist with a possible kidnapping case when a dignitary's son he was assigned to protect disappears from a local concert venue

After Eddie Barrett provides an alibi witness, Pride and the team are more determined than ever to find a break in the case and avenge Lasalle's murder.

Pride is cut off from the team and backed into a corner after the investigation into Eddie Barrett uncovers a malicious plot.

The team is concerned when Sebastian becomes unreachable while undercover as a new recruit.

The team must track down a mysterious female assassin responsible for murders in Athens, Rome and London. Also, Wade's son begs her to allow him to go on a police ride-along for an article he's writing on a youth outreach program at the NOPD.

The team investigates the murder of a JAG captain who was discovered at home by his daughter, the only heir to his large estate. Also, Sebastian is intimidated when he is put in charge of a team on his first day of Regional Enforcement Action Capabilities Team (REACT) training.

When Pride is unable to sleep due to continuing nightmares about the mysterious man in the red suit, he undergoes a specialized treatment to help him figure out the man’s identity. Also, an arrogant new officer, Special Agent Quentin Carter, joins the team.

Tammy must protect Rachel, a research-obsessed teenage girl, after her father is shot in their home, while the rest of the team searches for a motive.

When a man impersonating Lasalle attempts to free a young woman from jail, the team investigates both the imposter and the prisoner. Also, Pride's daughter pays him a surprise visit.

Racial tensions rise in New Orleans when a white NOPD officer shoots a black Navy officer he believed was armed in the middle of a busy street party.

When a Navy sailor is found dead, the team tracks the suspicious movements of people in his life prior to his death. Also, Hannah comes to terms with her daughter's relationship with her ex's new girlfriend, Veronica.

When Sebastian is injured while unsuccessfully trying to prevent a kidnapping, NCIS races to find the missing woman and her abductors; the team gets a peek into Agent Carter's personal life.

The team investigates the death of a Naval microbiologist whose hobby as a "myth buster" resulted in his death at the hands of a legendary bayou creature; Agent Khoury conducts an investigation into previous actions of Deputy Director Van Cleef.