NCIS is about to celebrate another milestone in its 20th season, and it’s quite the feat: its 450th episode.
The previous milestone hour, the 400th as part of Season 18, revealed how Gibbs (Mark Harmon) and Ducky (David McCallum) met, and fans were treated to returns from Mark’s son Sean Harmon and Adam Campbell to play their younger selves in the flashbacks.
While we wait to see what 450 brings, we’re taking a look at all the milestones the procedural has marked so far. They’ve brought a team member on officially, introduced an agent’s relative after years of only hearing about him, featured memorable cases, and been among the best episodes of the series. Scroll down to see our ranking, from least to most memorable.
NCIS, Mondays, 9/8c, CBS