If you think of police procedurals, NCIS is probably one of the first that comes to mind. The show, which transformed the genre over 20 years ago by focusing not just on cases, but on the dynamics of the team trying to solve those cases, has now become one of the longest-running shows on TV. Going on Season 23, and with six spin-offs sharing the same acronym, the NCIS franchise is more alive than ever. And that all starts with the “mothership,” NCIS.

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NCIS: The Enduring Legacy of TV’s Most Popular Police Procedural

When it comes to police procedurals, NCIS is one of the first names that comes to mind. For over two decades, the show has captivated millions of viewers worldwide with its unique mix of investigative storytelling, character-driven drama, and a dose of humor. What began as a spinoff from JAG in 2003 has since grown into one of the longest-running scripted television series in history.

A Genre-Defining Series

While many police procedurals tend to focus primarily on solving cases, NCIS redefined the formula by balancing the mystery-of-the-week with the personal dynamics of its core cast. The team’s chemistry—first led by the stoic yet fatherly Leroy Jethro Gibbs (Mark Harmon)—proved to be just as important as the crimes they solved. Viewers kept coming back not just for the forensic science or the military intrigue, but for the family-like bonds between the agents.

Longevity and Legacy

Now heading into Season 23, NCIS has firmly cemented its place as a cultural touchstone. Its enduring popularity has made it a cornerstone of CBS’s programming lineup, continuing to attract new generations of viewers while keeping long-time fans loyal.

But the impact of NCIS goes far beyond the “mothership.” The show has launched six spin-offs, each carrying the same acronym but exploring new locations, teams, and styles. From NCIS: Los Angeles and NCIS: New Orleans to the more recent NCIS: Hawai‘i and NCIS: Sydney, the franchise has proven remarkably adaptable, expanding its universe without losing its core identity.

Why NCIS Still Works

The secret to NCIS’s longevity lies in its ability to evolve while staying true to its roots. Cast changes, shifting storylines, and even the departure of major characters like Gibbs haven’t derailed its success. Instead, the writers have leaned into fresh perspectives, allowing the series to feel both familiar and renewed.

Another factor is its global appeal. With storylines often tied to international intrigue and a focus on the U.S. Navy and Marine Corps, the series resonates with audiences far beyond American borders.

The Future of NCIS

As the show gears up for another season, the question is no longer whether NCIS can keep going—it’s how much further the franchise will grow. With spinoffs flourishing and fans as engaged as ever, it’s clear the NCIS universe is still expanding.

After 20+ years on the air, NCIS has become more than just a TV show. It’s a franchise, a cultural institution, and proof that great storytelling and unforgettable characters can stand the test of time.

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