Image Credits: Kevin Lynch/CBS
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Since its debut on September 23, 2003, NCIS has become one of America’s most popular and enduring television shows. Created by Donald P. Bellisario and Don McGill, the military police procedural blends action, drama, and humor, following a fictional team of special agents from the Naval Criminal Investigative Service. Over two decades, NCIS has grown into a cultural phenomenon, now in its 21st season and boasting several spin-offs that have cemented its place in television history.
The show’s main character, Leroy Jethro Gibbs, portrayed by Mark Harmon, became a household name early in the series. Gibbs, a no-nonsense, deeply principled leader, has been central to NCIS’ success. His team of agents includes quirky and beloved characters like Anthony DiNozzo (Michael Weatherly), the quick-witted senior field agent, forensic scientist Abby Sciuto (Pauley Perrette), known for her gothic style, and medical examiner Dr. Donald “Ducky” Mallard (David McCallum), the wise and eccentric voice of reason. Over the years, the cast has evolved with new faces, including agents like Ellie Bishop (Emily Wickersham), Nick Torres (Wilmer Valderrama), and Jessica Knight (Katrina Law).
NCIS’ roots trace back to a two-episode arc in the eighth season of JAG, where its characters were first introduced in the episodes “Ice Queen” and “Meltdown.” Since then, the show has gone on to become the third-longest-running scripted, live-action prime-time series on U.S. television, trailing only Law & Order: Special Victims Unit and the Law & Order franchise.
Beyond its longevity, NCIS has built a global fan base, airing in over 200 countries and consistently ranking among the most-watched programs in the U.S. and abroad. Its mix of high-stakes criminal investigations, complex character dynamics, and moments of humor have kept viewers engaged, while the familial relationships among the cast have made audiences deeply invested in the characters’ personal lives.
However, Pauley Perrette has left her fans in shock with her decision to quit acting. Her exit marked a significant turning point for the show, as she had been a key part of NCIS since its inception. Perrette later revealed that behind-the-scenes tension contributed to her decision, though she expressed gratitude for her time on the series.