There have been several cast changes across the show's 20-plus years on the air with Sean Murray, who began as a guest star in Season 1, the longest-running member of the current cast. But the cast of ...

The NCIS cast and crew have begun production on season 23, and a behind-the-scenes look at the set reveals that two important characters are absent.

NCIS Season 23 officially began production, as indicated by a new behind-the-scenes clip released on July 17, 2025, through the NCIS Universe Instagram account.