On March 24, 2026, NCIS celebrated a remarkable milestone by airing its 500th episode, a testament to its enduring popularity and cultural significance. The series, created by Donald Bellisario, has captivated audiences for over two decades, originally spinning off from the series JAG.
Since its debut, NCIS has focused on the special agents of the Naval Criminal Investigative Service, with Mark Harmon leading the team as Leroy Jethro Gibbs until his departure. The show has garnered a substantial viewership, peaking at 9.7 million viewers during the 2023-24 season, although this number dropped to 7.85 million in the following season.
Despite its popularity, NCIS has received only 3 Emmy nominations without any wins, a surprising statistic given its status as the highest-rated broadcast TV series for five consecutive years. The series has also expanded its reach with 5 domestic spinoff series and one international spinoff, NCIS: Sydney, licensed in over 200 international markets.
The late David McCallum, who portrayed Dr. Donald ‘Ducky’ Mallard from the first season until his death in 2023, was a beloved character whose absence is felt by fans. His contributions, along with the ensemble cast, have played a significant role in the show’s success.
Reflecting on the show’s journey, Bellisario once remarked, “I have a very strange way of writing,” hinting at the unique storytelling approach that has resonated with viewers. The series has also featured numerous guest stars, including Jamie Lee Curtis, who expressed her delight in working with the cast, stating, “One of the unexpected delights of my varied career was being able to do five episodes opposite him and his team in front of and behind the camera.”
As NCIS continues to evolve, observers are keen to see how the series will adapt to changing viewer preferences and the television landscape. Details remain unconfirmed regarding future storylines and cast changes, but the show’s legacy is firmly established as a cornerstone of American television.