Mark Harmon was back as Leroy Jethro Gibbs for a rare cameo on the prequel series 'NCIS: Origins.' The actor played the 'NCIS' character for 18 seasons.
https://people.com/mark-harmon-returns-ncis-franchise-rare-cameo-118470…
Mark Harmon was back as Leroy Jethro Gibbs for a rare cameo on the prequel series 'NCIS: Origins.' The actor played the 'NCIS' character for 18 seasons.
https://people.com/mark-harmon-returns-ncis-franchise-rare-cameo-118470…
