NCIS franchise 2026 cast and spinoff guide opens with two active CBS legs — Gary Cole's flagship team and Austin Stowell's Origins prequel — plus Paramount+ entries Tony & Ziva and Sydney per network announcements.

Cole leads the Washington squad after Mark Harmon's exit. Parker anchors Season 20 through 23 with Murray's McGee, Valderrama's Torres, Law's Knight, and Dietzen's Palmer — the post-Gibbs era CBS built from sourced renewal reporting.

McGee, Torres, Knight, Palmer, and Kasie Hines form the institutional core fans track across cases. Harmon remains executive producer off-screen while the on-camera roster reflects CBS casting confirmed in trades and upfront presentations.

NCIS: Origins stars Austin Stowell as young Gibbs in the 1990s with a period ensemble CBS introduced at the October 2024 premiere. The prequel explains franchise mythology without requiring Harmon's on-screen return.

Weatherly and de Pablo reunite on Paramount+ for Tony & Ziva. Morgan Griffin leads NCIS: Sydney as Agent Mackey. Both extend the brand beyond CBS broadcast with international filming and streaming-first release strategies.