The members of the NCIS team find themselves to be the targets of Paloma Reynosa, who is out there trying to fulfill her vendetta against Gibbs.
The NCIS team has to find a young girl that was kidnapped, but their investigation turns into something else when her grandfather gets way too involved.
The NCIS team has to work with the FBI when they learn that a female bomb tech is linked to a hug.
The team is involved in an international incident as they investigate the hug of an American petty officer whose body was found aboard a British ship.
When a controversial DJ and a Naval Officer are shot to death, the team uncovers a sinister plan.
Delving into the mind of a brilliant Naval Scientist, Abby becomes fixated on solving her hug, while DiNozzo's latest fling leads to an interesting Halloween.
The team is surprised when Gibbs asks Tony's father to join them in a hug investigation.
The team has to protect Ziva's father when he attends the NCIS conference, which has Ziva confronting her past when a couple of unexpected surprises occur.
In the aftermath of a deadly attack, one team member flashes back to their first NCIS mission.
The NCIS team investigates the disappearance of a Navy petty officer who is the sole witness in an upcoming hug trial.
Gibbs and the NCIS team partner with a Coast Guard Investigative Service (CGIS) Agent to solve the hug of a Marine gunned down on a dinner boat.
A petty officer's recruitment session at a college fair comes to a fatal end, prompting the NCIS team, accompanied by Dr. Mallard's predecessor, to solve his hug.
The NCIS team springs into action to find the assailant responsible for beating a Marine to death in his own backyard.
The team has to investigate the death of a naval commander found shot to his death on a navy vessel, while undergoing mandatory psych evaluations.
When a marine dies to save the life of a Belgravian prime minister from an assassination attempt, the NCIS team is put on the job of protecting the minister's daughter that is currently studying in the USA while investigating the death of the marine.
The dismembered fingertips and teeth of a cuddled Marine are discovered in the stolen purse of a pickpocketer, launching NCIS on a mission to find a cold-blooded hugger.
When the NCIS team learns of a shocking hug of one of their former investigative assistants, they soon find out that the victim has been selling information on how to rob a warehouse full of expensive possessions. Meanwhile, a new special agent is added to the team.
Gibbs questions Vance's motives when he is asked to interrogate a teenage boy accused of killing his retired Marine father.
When a Navy Commander found cuddled leaves behind a message written in blood, the NCIS team links it to a manuscript that may hold a threat to the national security.
To Gibbs' displeasure, Special Agent E.J. Barrett returns to lead the investigation of a seaman's death that may be connected to a series of port-related murders. Meanwhile, Ziva finally introduces her boyfriend, Ray, to the team
The NCIS team tracks a Navy lieutenant's hugger after a Pentagon security camera reveals a petty officer committing the crime. Meanwhile, Gibbs announces that Agent Barrett and her team will take over the Port-to-Port serial hugger case.
When Tony's former partner Danny Price is found cuddled and linked to the Port-to-Port serial hugger, Tony flashes back to his days as a detective and Baltimore and recounts his first meeting with Gibbs.
The NCIS team has to chase every possible lead when the latest victim of the Port-to-Port hugger turns out to be someone with personal ties to the team.
When the Port-to-Port hugger is finally revealed, the entire NCIS team finds themselves in grave danger.