The NCIS team must determine why a murdered Navy drone pilot was using a black market drone to obtain military surveillance, and whether the drone's footage is linked to his death.

The life of a genius Navy coder employed by Brody's mother, Oliva Brody, hangs in the balance after the heart intended for his transplant is stolen.

After traveling to Texas to escort a key witness to the trial of an infamous arms dealer, Sonja and Special Agent Pride are ambushed.

Sebastian flies to D.C. to work with Abby Sciuto on the forensics in the case involving her brother, while Ellie Bishop comes to New Orleans to deliver a package and help Pride and his team on the case.

The team searches for a soldier believed to be a prisoner of war in Afghanistan when his prints are found in a crime scene.

The team tracks stolen Navy TNT to a cocaine warehouse run by Sonja's childhood friend.

The NCIS team protects a local DJ from a threatening perpetrator and investigates the murder of a Navy Captain who was attacked while on-air with the radio show. Also, Pride's daughter, Laurel (Shanley Caswell), returns home to discuss her future plans.

Brody thinks a sailor hit by a party bus in the French Quarter is connected to her sister's death when similarities between the two are discovered.

The NCIS team investigates the murder of a Navy Lieutenant during a French Quarter second line funeral procession, a New Orleans tradition that celebrates the recently deceased with a musical street parade.

A Navy culinary specialist is the target of an explosion while visiting her family's restaurant in the French Quarter. Also, Brody is in D.C. tracking a lead in the General Mathews leak case.

The NCIS team partners with Homeland Security after the murder of a Navy master diver is linked to chatter of a foreign attack on the city.

When the Coast Guard boards a yacht that is in an area that is used by smugglers, they find the Captain with the crew's waiter who is dead. They try to get him but he resists and kills him. The Coast Guard calls Pride because the yacht belongs to Javier Garcia. Pride thinks Garcia was smuggling something. He calls the FBI to tell them about it and sends LaSalle to help Gregorio. Pride discovers one of the passengers is someone he knows and that she's engaged to Garcia. Instead of arresting the men who took off the yacht what they were bringing in Gregorio decides to follow them instead if arresting them but things don't work out as planned. Isler wants Pride's friend to help them but Pride says it's too dangerous but she agrees to do it.

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 (Derek Webster) to help expose and stop the sinister scheme Mayor Hamilton (Steven Weber) has planned for the residents of Clearwater, on the third season finale.

While Pride remains on probation six weeks after his rogue takedown of the corrupt Mayor Hamilton, his team is closely monitored by Supervisory Special Agent Paula Boyd. Also, when the FBI arrives to run lead on a case involving a stolen big rig of nuclear waste, the team must secretly investigate from the sidelines.

A group of volatile thieves hold Pride and his bar patrons hostage.

As Pride fights for his life in the ICU, the team searches for the hit woman who tried to kill him.

While NCIS investigates the murder of a Navy intelligence officer killed during a conference for foreign diplomats, the key witness cozies up to Sebastian. Also, Pride has some trouble adjusting to his new position at the agency.

NCIS investigates the disappearance of a Navy entomologist after a deadly shooting at a research lab. Nero, with Naval Intelligence, joins the investigation when the team discovers a rare and deadly virus was also stolen.