Ncis - Season 10 | 2026 |

This season solidified Brian Dietzen (Jimmy Palmer) as a series regular after nine years on the show. Every Major NCIS Guest Star Ever - TV Guide

Season Finale: The core trio resigns; Gibbs is seen aiming a sniper rifle at Fornell. NCIS - Season 10

Season 10 of is widely regarded as a pinnacle for the series, serving as the year it officially became the most-watched program on U.S. television, even surpassing Sunday Night Football . Spanning 24 episodes from September 2012 to May 2013, the season shifted from its standard procedural roots into high-stakes, serialized drama that permanently altered the team's landscape. Key Narrative Pillars This season solidified Brian Dietzen (Jimmy Palmer) as

While the procedural elements remained, viewers noted a darker, more somber tone as the "family" at NCIS faced internal and external threats they couldn't simply solve in an hour. television, even surpassing Sunday Night Football

The final episodes introduced DOD investigator Richard Parsons (Colin Hanks), who targeted Gibbs for his past "off-book" actions. This culminated in a massive cliffhanger where Tony, Ziva, and McGee resigned to protect Gibbs. Major Performance Milestones