Overview

• The show focuses on Gibbs' beginnings at the Naval Investigation Service (NIS) before it became NCIS.
• Mark Harmon, who played Gibbs in the original series, narrates and makes brief appearances in the prequel.
• Austin Stowell stars as a young Gibbs, portraying a character shaped by personal tragedy and early career challenges.
• The series introduces Mike Franks, played by Kyle Schmid, as a key mentor and partner to Gibbs.
• Set in 1991, the show incorporates period elements like analog technology and explores character-driven storylines.