When Will Mark Harmon Spin-Off Be Released?

Mark Harmon, iconic for his role as Leroy Jethro Gibbs in NCIS, has joined the spin-off series NCIS: Origins as an executive producer. The new show, set in the early 1990s, explores Gibbs’ early years, about a decade before NCIS started. Instead of returning on-screen, Harmon will narrate the series, guiding audiences through Gibbs’ formative experiences. A new actor will be cast to portray the young Gibbs, moving away from the trend of de-aging actors with CGI.

This approach keeps Harmon connected to the character while introducing a fresh face to embody Gibbs’ younger days. NCIS: Origins is eagerly anticipated to premiere in 2025.