NCIS’ main man Agent Leroy Jethro Gibbs (played by Mark Harmon) has led the way throughout the entirety of the CBS show’s 16-year history. However, there are some question marks over when the veteran agent started on the team thanks to an unearthed scene from JAG. So when did Gibbs actually join NCIS?


There have been a number of changing faces in the NCIS team over the years, from Caitlin Todd (Sasha Alexander) and Paula Cassidy (Jessica Steen) to Tony Dinozzo (Michael Weatherly) and Ellie Bishop (Emily Wickersham).
But one face has always remained the same, as Agent Gibbs has been the one constant throughout the show.
Yet there is a plot hole surrounding when he actually first started at NCIS.
Thanks to eagle-eyed JAG fans, Gibbs has caused confusion over his NCIS start date.
When did Agent Gibbs join NCIS?
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When did Gibbs join NCIS? (Image: cbs)
Agent Gibbs. (Image: CBS)

In the fourth episode of season three entitled Hiatus Part Two, Gibbs has woken up from a coma and has suffered temporary memory loss.
During the show, it is revealed he joined NIS - which later became NCIS - in 1992 after the death of his wife and daughter.
So since the early days of the crime drama, we assumed this was the case.
However, an episode of JAG from a few years earlier which confuses matters.
When did Gibbs join NCIS? (Image: CBS)
Agents Ziva David and Gibbs. (Image: CBS)