NCIS: Origins new character risks ruining Mark Harmon's emotional ending for Leroy Jethro Gibbs. The CBS series gave the beloved original Special Agent team leader a proper send-off when he decided to retire in Naktok Bay, Alaska. Even after two decades of Gibbs on the screen, there are still many details about his life that haven't fully played out. This inspires the new NCIS expansion series, which would follow Gibbs during his earliest years as a member of Mike Franks' team. Set in the '90s, the prequel will take place years before the events of the mothership series.

https://screenrant.com/ncis-origins-mark-harmon-dominguez-gibbs-retirement-ruin/