SPOILER ALERT! This story contains details from the two-part premiere of NCIS: Origins on CBS.
The origin story of Leroy Jethro Gibbs has finally begun: CBS kicked off its much-anticipated prequel Monday from veteran NCIS writers-producers Gina Lucita Monreal and David J. North, as well as CBS Studios. And as promised, Mark Harmon returned to both narrate and to appear…
