Confirmed Returning Actors for NCIS Season 21: The Noteworthy Cast Members Making a Comeback

"NCIS" is set to return with its newest season, despite uncertainties caused by the writers' strike. The show was originally scheduled to premiere in fall 2023 and has been running since 2003, making it one of the longest-running primetime series in the US. The series has a loyal fan base and consistently receives high ratings. The main cast, including Sean Murray and David McCallum, is expected to return. There are also rumors that Mark Harmon, who played Leroy Jethro Gibbs, may make a comeback. However, Harmon's return is still uncertain due to his busy schedule.

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