AceShowbiz - NCIS is marking an extraordinary achievement as it approaches its 500th episode tonight, March 24, airing at 8 p.m. ET/PT on CBS. After nearly 23 years on the air, this milestone highlights the enduring popularity of the crime procedural that began as a spin-off of JAG in 2003. Created by Donald P. Bellisario and Don McGill, NCIS has grown into a television juggernaut, spawning six spin-offs and captivating audiences with its blend of crime-solving, strong character dynamics, and military drama.

The 500th episode, aptly titled "All Good Things," serves as both a tribute to the show's legacy and a thrilling narrative chapter. The story revisits themes from early seasons when the NCIS team is approached by the son of a marine whom Gibbs (portrayed by Mark Harmon) once helped. However, the unit faces a severe threat as the official promo reveals the possibility of the team being disbanded. In response, the agents take matters into their own hands, operating off the books to help the man in need. This rogue mission quickly escalates, and the characters confront risks that could cost them far more than their careers. Despite the danger, these seasoned veterans of naval crime investigation embrace the challenge head-on.

The episode is penned by showrunner Steven D. Binder and directed by José Clemente Hernandez. While much has evolved since the Major Crimes Response Unit was first led by Gibbs, the current ensemble cast remains strong in Season 23. Leading the charge are Sean Murray, Wilmer Valderrama, Brian Dietzen, Diona Reasonover, Katrina Law, Rocky Carroll, and Gary Cole. Notably, Sean Murray is the only original cast member still part of the series, having transitioned from a guest star in Episode 7 to a central figure beloved by fans. In an interview, Murray shared how his character McGee was initially intended as a one-time role but became a permanent fixture due to his chemistry with Michael Weatherly's character, Tony DiNozzo.

Murray explained, "When NCIS was happening, the character of McGee was a one-shot guest star that was written by Frank Cardea and George Schenck. [...] A couple of episodes later, they were three minutes short on an edit, so they had to come up with some material to make up a C story, and someone said, 'Let's bring back McGee, and we'll put him with Tony. They were fun together.' From that point on, McGee was just slowly a part of the thing." This serendipitous casting decision helped solidify the show's ensemble dynamic, contributing to its longevity and fan devotion.

In honor of this landmark, Collider is celebrating NCIS with a comprehensive retrospective series that delves into the show's history and impact. This week's edition of Collider Rewind features exclusive interviews, behind-the-scenes insights, and reflections on the series' evolution over more than two decades. Among those interviewed is Emily Wickersham, who recently reprised her role as Ellie Bishop for the first time since her departure in Season 18. Her return brings a new, darker twist to her character, now portrayed as a cyberterrorist and a target for the NCIS team. Wickersham remarked on this shift, saying, "Bishop went off and had to really shift her life. There was this fire that she didn't want to put out, and I think that was happening for me in different ways."

Showrunner Steven D. Binder also reflected on one of the series' most memorable romantic storylines: the relationship between Anthony DiNozzo (Michael Weatherly) and Ziva David (Cote de Pablo), affectionately known as "Tiva" among fans. Their chemistry, which began developing in Season 3, was nurtured through a combination of thoughtful writing and the actors' performances. Binder noted that the romance felt organic and genuine, which fueled audience investment in their dynamic. He explained, "As it turns out, that was the recipe for the audiences really wanting these two to get together. And I think when it's organic like that, that's where you get the most interesting relationships." This blend of strong storytelling and actor synergy has been a hallmark of the series, helping it maintain a loyal fanbase.

Over its 23 seasons, NCIS has become more than just a procedural; it has grown into a family-centered drama with complex characters who resonate deeply with viewers. From its early days as a spin-off to becoming a flagship series for CBS, the show has consistently delivered compelling narratives centered around naval crimes and the people who solve them. The 500th episode is a testament to its resilience and the dedication of its cast and crew.

Fans tuning in tonight will experience a blend of nostalgia and fresh storytelling as the series honors its past while continuing to forge ahead. The landmark episode promises Easter eggs for longtime viewers and narrative developments that could shape the future of the show. With a proven track record of engaging stories and character-driven drama, NCIS remains a cornerstone of CBS’s programming lineup.

As the series celebrates this milestone, industry observers and fans alike recognize the rare achievement of reaching 500 episodes, a feat that few television dramas accomplish. The success of NCIS has also influenced television trends, inspiring multiple spin-offs and cementing its place in popular culture. Its ability to evolve and adapt over two decades underscores the show's creative strength and its connection with audiences.

Tonight’s episode will air nationwide at 8 p.m. ET/PT on CBS, inviting viewers to join the celebration of a television institution. For those looking to explore more about the series’ storied history, Collider will continue to provide in-depth coverage and special features reflecting on the legacy of NCIS and its impact on the crime drama genre.