“NCIS” showcased remarkable cast talents over its 18 seasons. Initially, Mark Harmon wasn’t the first choice for Leroy Jethro Gibbs. Family ties existed among the cast, like Sean Murray being the stepson of the show’s creator. Beyond acting, cast members like Pauley Perrette and Michael Weatherly contributed musically to the series.
Interestingly, Mark Harmon’s love for carpentry mirrors Gibbs’ interests, and tools used on set belonged to Harmon.

Some departures were due to actors’ requests, such as Sasha Alexander and David McCallum finding the show’s pace challenging.
Cote de Pablo’s abrupt exit was due to script concerns, while Pauley Perrette’s departure wasn’t linked to behind-the-scenes drama with Mark Harmon.
Notable guest appearances by future stars like Millie Bobby Brown, Sean Astin, and others happened throughout the series.

The on-screen chemistry between Cote de Pablo and Michael Weatherly was loved by fans, despite a rocky start. Even after leaving the show, their friendship remained strong.
“NCIS” was not just about mysteries but also showcased the diverse talents and personal lives of its beloved cast.