Season 5

The NCIS team uncover a huge secret, as their mission to capture La Grenouille comes to an explosive and deadly conclusion.

During an autopsy, Ducky makes a startling discovery that turns a murder of a Petty Officer into a search for a missing infant.

Lt. Colonel Mann joins Gibbs in an investigation of the murder of a Marine Captain who had access to highly classified information. Things get very pe

When Ducky realizes that one of his cadavers used for research is actually a victim of murder, the NCIS team identify him as a criminal genius who is

The NCIS team are called in to stop a Naval officer from committing suicide by jumping off a rooftop, but when the suicide attempt turns into a murder

While investigating a mysterious death on a top-secret Naval research ship at sea, the NCIS team board the abandoned ship and find a deadly secret tha

Gibbs finds himself emotionally challenged when he agrees to investigate a crime connected to a friend of his daughter, who passed away years ago, and

A murder investigation of a Navy Admiral takes a shocking turn when a woman, a political refugee, returns home to search for her husband.

The NCIS team have to babysit a nine-year-old son of a missing man, a survivalist who is somehow connected to a cold case murder. The investigation le

While trying to track down a delusional and violent Marine who thinks he's still in Iraq, the NCIS team learn that the man has been the subject of a s

After a young Muslim Marine is murdered near his Mosque, Ducky refuses to perform an autopsy due to his religious beliefs. The NCIS team try to talk t

The NCIS team go on a stakeout in a warehouse to catch a suspected thief of a high-tech Naval radar, but they accidentally end up witnessing a murder.

When a dog owner is found murdered, the NCIS team must determine if his dog committed the murder or not, and Abby decides to fight for the dog's life

The dead body of La Grenouille surfaces and the entire NCIS is put under investigation by the FBI, with Jenny as the prime suspect for his murder.

Two members of the NCIS team are sent to Baghdad to investigate a mortar attack that turned into a murder investigation.

While on an undercover mission, Ziva's life is put in grave danger when the serial killer she's been tracking becomes suspicious of her.

Palmer is put in grave danger when he becomes the target of an anonymous murderer, whom only he can recognize.

When a former NCIS agent is found dead, the entire team is put in danger as they hunt after the killer.

When one of their own is killed, the team must find the killer before they get to another member of the team, Gibbs. In an emotional investigation, th