Mark Harmon played Leroy Jethro Gibbs for 18 seasons on CBS’ hit drama “NCIS.” The young Gibbs is played by Austin Stowell in “NCIS: Origins.” See all the before-and-after “NCIS” characters in “Origins.”
CBS

In Mark Harmon’s October 2021 final episode as Leroy Gibbs, the ‘NCIS’ chief retired to a life of fly-fishing in Alaska.
Sonja Flemming, CBS

Longtime friends Mike Franks (Muse Watson) and Leroy Jethro Gibbs (Mark Harmon) enjoy peaceful fishing in “NCIS” Season 10.
Cliff Lipson, CBS

When “Origins” producers tried to call Austin Stowell to tell him he had the young Gibbs role, Stowell was deep in the woods with poor reception. It was so Gibbs-like.
Erik Voake, CBS

Austin Stowell as Gibbs in the “NCIS: Origins” premiere.
CBS

Mentor Mike Franks was played by Muse Watson in 19 “NCIS” episodes.
Sonja Flemming, CBS

“Origins” is the prequel story for the longtime “NCIS” relationship between Mike Franks (Muse Watson) and Leroy Jethro Gibbs (Mark Harmon).
SONJA FLEMMING, CBS

Young Mike Franks is played by Kyle Schmid in “NCIS: Origins.”
CBS

Mike Franks (Kyle Schmid) gets ready for an interrogation on “NCIS: Origins” along with Mary Jo Hayes (Tyla Abercrombie).
Sonja Flemming, CBS

NCIS Special Agent Vera Strickland (Roma Maffia) speaks with Gibbs (Mark Harmon) in Season 11 of “NCIS”
Cliff Lipson, CBS

Diany Rodriguez is pictured exclusively as young Vera Strickland in this photo from “NCIS: Origins.”
Sonja Flemming, CBS

Diany Rodriguez as Vera Strickland in the “NCIS: Origins” premiere with Kyle Schmid as Strickland’s future partner Mike Franks. Rodriguez is no rookie to the “NCIS” family. The actress appeared in a 2017 episode of “NCIS: New Orleans” as DHS Agent Garcia.
Sonja Flemming, CBS

“In NCIS: Origins,” new character Cecilia “Lala” Dominguez (Mariel Molino) sits with Vera Strickland (Diany Rodriguez). “There weren’t many female agents in 1991, so Lala and Vera hold down the fort. We’ll see how they navigate what is really a man’s world,” says executive producer Gina Lucita Monreal.