The NCIS team partners with several federal agencies to track a sniper who is targeting crowded events in the city. Also, FBI Special Agent Tammy Gregorio arrives to investigate Pride and his team.

Pride faces further backlash from the FBI when he helps former Navy Intelligence Analyst Elvis Bertrand, who is the lead suspect in a multiple homicide case.

After a decorated petty officer is found dead inside a sports arena, evidence leads Pride and the NCIS team to a kidnapping case of a petty officer who was last seen in Mexico.

The team join forces with the FBI to investigate a plane crash in the bayou that left three sailors dead. Meanwhile, Sonja and Lasalle interview candidates for the open agent position.

After a petty officer and member of the prestigious United States Navy Band is murdered in her home, Pride takes temporary custody of the victim’s nephew who is the sole witness to the crime.

Pride must protect a beloved family friend who is engaged to the number one suspect in the ongoing NCIS and FBI cartel case.

Sebastian is sent undercover and Patton exercises his former gambling skills, as Pride and the team attempt a dangerous operation to trap Garcia.

Unable to trust anyone in New Orleans, the NCIS team calls in FBI Assistant Director Isler to help expose and stop the sinister scheme Mayor Hamilton has planned for the residents of Clearwater. Season Finale.

Pride and his team join forces with FBI Director Isler when a Russian operative, who is in the U.S. to provide intelligence on sleeper agents, disappears after his Navy escort is murdered. Meanwhile, Tammy partners with former sleeper agent Eva Azarova to locate the missing operative Eva has known since childhood.

Sebastian is placed on administrative leave after his response in a foot chase to apprehend a high-value fugitive is questioned by the FBI. Meanwhile, Pride and the team continue to track the target and try to clear Sebastian’s name.

After Rita Deveraux tells Pride that Douglas Hamilton is about to make a deal to get out of prison, Pride and the team rehash the Clearwater case in hopes of locating his mystery partner and spoiling his bargaining chip.

Sebastian receives a plea for help from his high-school friend Adrian Conner after her business partner is killed at the Crescent City Gaming Convention. Also, FBI Special Agent Raymond Isler believes Adrian is a hacker the Cyber Crimes division has been tracking for years.

FBI Special Agent Raymond Isler asks Pride for help with an off-the-books opioids theft investigation he is personally invested in. Also, Percy is sent undercover as a getaway driver with Isler as the muscle for a job tied to the case.

After a reshuffling of assignments, Pride is no longer Special Agent in Charge of the Southeast and returns to the New Orleans NCIS office during the investigation of a missing petty officer.

Pride and Lasalle travel to war-torn South Ossetia in Russia to locate FBI Special Agent Raymond Isler, who was kidnapped during a failed mission to apprehend the leader of Apollyon, the underground spy network responsible for murdering Pride's father.

After tracking Apollyon, a deadly underground spy network, to war-torn South Ossetia, Pride is separated from the team and faces grave danger. Also, in order to save Pride, the NCIS team must locate a mole who continues to feed information to Apollyon.

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.