NCIS: The Real Reasons These 10 Actors Left the Show

NCIS has become one of television’s longest-running and most beloved crime dramas, attracting millions of fans around the world. But after so many seasons, the series has also experienced its fair share of cast changes. From unexpected character deaths to emotional departures, several familiar faces have said goodbye over the years, leaving viewers wondering what really happened behind the scenes.

So, why have so many actors left NCIS? Some departures were driven by personal decisions and new career opportunities, while others involved creative choices made by the show’s writers. Let’s look back at the stories behind the exits of 10 memorable NCIS stars.

First, there is Sasha Alexander, who portrayed Special Agent Caitlin “Kate” Todd. Her departure shocked fans when Kate was killed in the Season 2 finale. Alexander had decided to leave the demanding series, and her character’s dramatic exit became one of the show’s most unforgettable moments.

Then there is Cote de Pablo, who played the beloved Ziva David. After leaving the series in 2013, de Pablo explained that she was unhappy with the direction of her character’s storyline. Her exit left fans with many unanswered questions, although Ziva’s story eventually continued in later appearances.

Lauren Holly, who portrayed NCIS Director Jenny Shepard, also experienced a dramatic departure. Her character was killed during a dangerous confrontation in Season 5, bringing an end to Jenny’s complicated relationship with Gibbs and her time leading the agency.

Another major exit came from Michael Weatherly, the actor behind Special Agent Anthony “Tony” DiNozzo Jr. After 13 seasons, Weatherly decided it was time to explore new opportunities. His departure marked the end of an era for longtime fans, particularly those who had followed Tony’s evolving relationships with his teammates.

Jennifer Esposito, who played Special Agent Alexandra “Alex” Quinn, joined the team in Season 14 but left after just one season. Her departure was relatively brief, and the series moved forward without providing an extensive on-screen explanation for Quinn’s absence.

The death of Clayton Reeves, portrayed by Duane Henry, was another heartbreaking moment. Reeves was introduced as a capable MI6 officer who became part of the NCIS team. His character was killed in Season 15 while protecting Abby Sciuto, giving the storyline a deeply emotional conclusion.

Speaking of Abby, Pauley Perrette was one of the show’s most recognizable stars. After 15 seasons as forensic scientist Abby Sciuto, Perrette left the series in 2018. Her departure followed years of playing a fan-favorite character, and she later publicly discussed serious concerns about her experience on the set. Her exit generated considerable attention among viewers.

Emily Wickersham, who played Special Agent Eleanor “Ellie” Bishop, departed after eight seasons in 2021. Her character left NCIS to pursue a new chapter connected to an undercover mission. Wickersham’s decision to move on came after a significant run with the series, rather than a publicly confirmed suspension of her acting career.

Maria Bello, who portrayed forensic psychologist Jacqueline “Jack” Sloane, also chose to leave after three seasons. Her final appearance aired in 2021, as Sloane decided to remain in Afghanistan and continue helping people there. The storyline gave her character a meaningful conclusion while leaving the door open for future possibilities.

Finally, Mark Harmon, the actor who made Leroy Jethro Gibbs one of television’s most recognizable investigators, stepped away from his regular starring role in Season 19. After nearly two decades with the franchise, Harmon’s reduced involvement marked a major turning point for the show. Gibbs’ departure was written as a decision to remain in Alaska, where he had found a sense of peace.

From shocking deaths and personal decisions to new career opportunities, the departures of these 10 actors helped shape the history of NCIS. Each exit changed the team in a different way, and some left behind questions that fans continue to discuss today.

Which NCIS departure surprised you the most? And which former cast member would you love to see return?