The fifth season of the police procedural drama NCIS premiered on September 25, 2007 and marks the end of Donald P. Bellisario's involvement as show runner. It concludes the La Grenouille storyline which ended with a cliffhanger in season four's finale, "Angel of Death". The fifth season also reveals more background information about Gibbs' past before NCIS.
The Writers Guild strike limited episode production and the DVD set had five discs instead of six. The season ended with its 19th episode on May 20, 2008; the strike-caused gap is between episodes 11 and 12. The season ended with a two-part season finale called "Judgment Day". The season featured the departure of recurring characters Colonel Hollis Mann and Jeanne Benoit, as well as the death of Jenny Shepard, one of the main characters.
From this season on, the opening sequence was shortened to an even 30 second duration instead of the normal 37–44 second duration in the previous seasons.
|The NCIS team uncovers a huge secret, as their mission to capture La Grenouille comes to an…|
|During an autopsy, Ducky makes a startling discovery that turns a murder of a Petty Officer into a…|
|Lt. Colonel Mann joins Gibbs in an investigation of the murder of a Marine Captain who had access…|
|When Ducky realizes that one of his cadavers used for research is actually a victim of murder, the…|
|The NCIS team is called in to stop a naval officer from committing suicide by jumping off a…|
|While investigating a mysterious death on a top-secret naval research ship at sea, the NCIS team…|
|Gibbs finds himself emotionally challenged when he agrees to investigate a crime connected to a…|
|A murder investigation of a Navy Admiral takes a shocking turn when a woman, a political refugee,…|
|The NCIS team has to babysit a 9-year-old son of a missing man, a survivalist who is somehow…|
|While trying to track down a delusional and violent Marine who thinks he's still in Iraq, the NCIS…|
|After a young Muslim Marine is murdered near his Mosque, Ducky refuses to perform autopsy due to…|
|The NCIS team goes on a stakeout in a warehouse to catch a suspected thief of a high-tech naval…|
|When a dog owner is found murdered, the NCIS team must determine if his dog committed the murder or…|
|The dead body of La Grenouille finally surfaces and the entire NCIS is put under the investigation…|
|Two members of the NCIS team are sent to Baghdad to investigate a Mortar attack that turned into a…|
|While on an undercover mission, Ziva's life is put in grave danger when the serial killer she's…|
|Palmer is put in grave danger when he becomes the target of an anonymous murderer, whom only he can…|
|When one of their own is killed, the team must find the killer before they get to another member of…|