Mark Harmon has become synonymous with Leroy Jethro Gibbs after playing him on NCIS for 19 seasons, so it's hard to imagine ...

A heartfelt tribute to David McCallum, a surprise return from Michael Weatherly, and why Mark Harmon was missing from NCIS.

Mark Harmon expected NCIS to be dark and gritty — then it became a quippy crime procedural. Not what he signed up for, but it worked.

Mark Harmon captained the flagship NCIS for 18 years. Cast as Special Agent in Charge, Leroy Jethro Gibbs, Mark helmed the series from 2003 to 2021, banking an impressive salary per episode.

Mark Harmon has grown to become a TV veteran thanks to his role on NCIS as agent Leroy Jethro Gibbs, a character he portrayed for almost 20 years before his untimely departure in 2021. The actor ...

NCIS debuted in 2003 and more than 20 years later, fans are still captivated by the show — no matter who is starring on it. At the start of season 22 in fall 2024, only McGee remained of the ...

Narrated by “NCIS” star Mark Harmon, “NCIS: Origins” takes fans back to Camp Pendleton 1991, where a young Leroy Jethro Gibbs is building his special agent career under the well ...