In Season 13, Gibbs fights for his life after being shot, Bishop and McGee pose as a married couple to investigate a murder, and Vance looks into a murder that seems connected to his past.
Gibbs fights for his life on board a US Navy hospital ship after being shot. Meanwhile, DiNozzo and Joanna Teague head for Shanghai, where they hope to take down the leaders of the terrorist group known as The Calling. Starring Mark Harmon, Michael Weatherly and Mimi Rogers.
Gibbs throws himself back into his work following his near-death experience, updating his appearance and tackling a new risky case alongside DEA agent Luis Mitchell, who wants help bringing down a drugs cartel. Concerned about his colleague's apparent enthusiasm to re-enter the field, DiNozzo discovers Mitchell is the son of a former NCIS agent who gave his life trying to save Gibbs' late wife and daughter, and this attachment is causing Gibbs to break his own rule against personal involvement in a case. However, a significant danger is posed by Benson Long, the cartel's head, and Mitchell's top target.
A US Marine is found murdered in Quantico, mere hours after calling Gibbs to discuss a possible case. In response, Bishop and McGee go undercover as a married couple to run surveillance on a lieutenant and his wife, who may be connected to the death. Starring Mark Harmon, Emily Wickersham and Michael Weatherly.
A young Navy Seaman is found dead, with his eyes gouged out, after being involved in a car accident. Director Vance makes a rare return to field duty, pairing up with Gibbs to investigate when it becomes clear the killing seems to be connected to the case of Kip Klugman, a former NCIS agent he once locked up for stealing evidence. Starring Mark Harmon and Rocky Carroll.
Abby visits a pharmaceutical lab to investigate a murder case, but when armed men storm the facility and hold everyone hostage, she is trapped within the building with no means of communicating with the outside world. Crime drama, starring Pauley Perrette, Mark Harmon and David McCallum.
The notorious Tri-State Sniper appears to have claimed another victim when a petty officer is shot dead in a crowded park. However, when the team discovers the killer in question was already in custody on the day of the shooting, it becomes clear a copy-cat is on the loose. As their investigation progresses, the agents learn the victim was recently found guilty of placing a camera in the female changing rooms of the USS Camden, earning himself plenty of enemies - but did any of them hate him enough to kill?
The team is called to investigate the murder of a retired US Navy lieutenant commander, and the inquiry forces Ducky to reveal he has been working as part of a secret society dedicated to solving cold cases. Starring Mark Harmon, David McCallum and Pauley Perrette.
DiNozzo is reunited with his old flame, Jeanne Benoit, when insurgents in Sudan attack a group of volunteer doctors, including her husband. Travelling to the crime scene to conduct a joint murder-kidnapping investigation, Dinozzi and McGee offer their assistance in searching for the missing doctors. Crime drama, starring Michael Weatherly and Sean Murray, with Scottie Thompson.
Petty officer Kyle Friedgen is accused of killing his ex-girlfriend, but while his case is dismissed due to a mishandled warrant, his life and reputation are marred by suspicion that he got away with murder. Determined to clear his name in full, Friedgen volunteers to be court-martialled, on the condition that the NCIS team conducts its own investigation. Meanwhile, Bishop and Jake discuss their marital problems. Naval crime drama, starring Emily Wickersham, with Jamie Bamber.
The two Marine brothers of a sailor battling leukaemia are killed in the line of duty, and to spare the servicemen's family further grief, the secretary of the US Navy seeks the NCIS team's help in locating a suitable bone marrow donor. Meanwhile, Bishop returns home to Oklahoma for Thanksgiving. Military crime drama, starring Emily Wickersham.
Ducky is assaulted by a man who claims to have previously undisclosed information about his half-brother, who died decades ago. While his NCIS colleagues traces the attacker's whereabouts, Dr Mallard recalls the emotional final days he spent with his sibling. Elsewhere, as the holiday season approaches, Bishop and Jake discuss the future of their relationship. Naval crime drama, starring David McCallum.
The first instalment of a two-part crossover with NCIS: New Orleans sees the Washington, DC team co-operating with their colleagues from the Big Easy to investigate a spate of lethal poisonings on board a New Orleans-to-DC flight. All the evidence seems to point to missing chef Luca, who happens to be Abby's brother, so the two investigative services join forces to locate him, and find out why a private tech firm seems to have been targetted by the killer. Naval crime drama, guest starring Scott Bakula.
The team suspects foul play when a seaman who was set to testify before a grand jury dies before he can make his court appearance. When it becomes clear the man was murdered, the subsequent investigation reveals that a previously thwarted human-trafficking ring has been re-established. Meanwhile, a storm causes a massive power outage, and McGee seeks a room for the night among his colleagues. Naval crime drama, starring Sean Murray.
A deep-sea diver is murdered on the job, and his co-workers all become suspects. However, when they return to the surface, they must remain in a high-tech decompression chamber for four days. With each of their suspects confined within a tank, the NCIS team must complete an unorthodox investigation from the outside. Starring Mark Harmon, David McCallum and Pauley Perrette.
Sarah Porter, the Secretary of the Navy, learns her daughter has been kidnapped, and the NCIS crew teams up with the FBI to track the case, determine a motive and bring the abducted girl home. Meanwhile, McGee's childhood friend, NCIS Special Agent Valerie Page, arrives in town to assist with advanced tactics training. Naval crime drama, guest starring Leslie Hope and Christina Chang.
The team looks into a raid on a naval base, and Dr Cyril Taft - the surgeon who saved Gibbs' life - experiences the thrill of assisting on an investigation. Assigned to treat Gibbs' suspect, Taft manages to uncover evidence that may prove crucial to solving the case. Meanwhile, DiNozzo pays his old flame Jeanne Benoit a visit as he chases a lead involving doctors in Sudan. Guest starring John Cryer and Scottie Thompson.
A day spent working on a cut-and-dried case leaves the team free to spend some time away from work, and while McGee and Delilah argue over the importance of keeping shop-talk to a minimum, DiNozzo ends up boring his dinner date with crime-solving tales. However, the agents' personal plans are all interrupted as, one-by-one, they realise errors have been made in closing their latest investigation. Starring Mark Harmon, David McCallum and Pauley Perrette.
An American couple are attacked in Iraq, in the very same spot a group of US Special Ops snipers were ambushed six months earlier. Determined to get to the bottom of the case, Gibbs is forced to speak to Aaron Davis, the only survivor of the first assault, who is now struggling through PTSD at the Walter Reed Medical Centre. The 300th episode of the military crime drama, starring Mark Harmon, David McCallum and Pauley Perrette.
A US Navy Public Affairs Officer is killed, and when the team takes up the case, both the man's wife and his mistress emerge as potential suspects. Each woman offering a very different take on the chain of events that led to the murder, and the investigators are forced to decide which of the two is telling the truth. Meanwhile, DiNozzo's father comes to the aid of a homeless woman, who makes a surprising claim about his relationship with her. Guest starring Robert Wagner.
Tony finds himself in a difficult position when his identity is stolen. Worse yet, multiple fraudsters make use of his status as a special agent to blackmail US senators, and as the chain of events begins to spiral out of control, it is left to the real Dinozzo to bring the perpetrators to justice. Naval crime drama, starring Michael Weatherly.
Gibbs teams up with his old friend Senior FBI Agent TC Fornell after two British prisoners, including a former spy, escape captivity and flee to the US via a shipping container. Meanwhile, McGee is busy hunting for a new apartment, and is determined to discover how DiNozzo managed to snag his lavish home. Naval crime drama, guest starring Joe Spano.
A 14-year-old boy manages to foil a home invasion, but when Gibbs is called in to investigate, he suspects the teenager may be withholding crucial information. As the case makes progress, Gibbs turns his attention to helping the boy's mother, the wife of a naval officer, and his efforts result in an invitation to the White House to meet the First Lady (Michelle Obama, guest starring as herself). Meanwhile, Director Vance and FBI Agent Fornell travel to London as part of the ongoing case involving the escaped British spies.
The team, alongside the FBI and MI6, continues the international manhunt for a disgraced British spy who is seeking revenge on the agents he blames for his wife's death. A re-examination of the fugitive's conviction for selling military intelligence reveals that he may have been framed - and the identity of the only person who can clear his name.
Ziva's family farm in Israel is devastated by an explosion, and the former NCIS agent is reported dead. Determined to seek justice, Tony ignores orders to stay off the case and sets out to track down Trent Kort, the British national and ex-CIA agent who remains the prime suspect.