• Mark Harmon will return to the NCIS universe to narrate and executive produce a prequel spinoff focused on the younger years of Leroy Jethro Gibbs.
  • The NCIS prequel will feature a younger version of Special Agent Vera Strickland, who was once Mike Franks’ partner.
  • Sean Harmon, Mark Harmon’s son, who helped develop the idea and pitch it, will not be portraying the younger version of Gibbs in the prequel but will focus on executive producing the series.