Mark Harmon’s return as Leroy Jethro Gibbs to the main NCIS show could happen sooner than expected, potentially in NCIS Season 21. Harmon stepped away from his role during NCIS Season 19, with Gibbs retiring to Alaska. The loss of Harmon’s character, a mainstay for nearly two decades, left a significant void in the series.
However, Gibbs’s departure left the door open for a possible return, especially considering the FBI’s pursuit of him. With allies supporting him, evading capture appears feasible. Harmon has confirmed his return as Gibbs in the prequel series, serving as the narrator, set to premiere in the 2024-2025 television season. Yet, there’s a crucial reason he might appear in NCIS Season 21.
In NCIS Season 21, a tribute episode for the late David McCallum, who portrayed Donald “Ducky” Mallard, is planned. The episode will address Ducky’s passing, exploring the impact he had on the team. Harmon could return for this Ducky farewell episode, solving the case and honoring his friend. This potential return would compensate for Gibbs’s absence during NCIS Season 20.
Gibbs’s return for Ducky’s farewell episode is significant due to their deep-rooted friendship, dating back to the 1980s. Their bond, explored during Harmon’s departure episode, was emotionally charged, emphasizing the strength of their connection. Given this, it would be fitting for Gibbs to return to D.C. upon learning of his oldest friend’s death.
Even if Gibbs doesn’t actively participate in the case addressed in the tribute episode, his presence during the final rites would hold great meaning. Harmon’s statement following McCallum’s passing further supports the idea that Gibbs would pay his respects to his NCIS character.