• The "NCIS" TV series was created by Donald P. Bellisario and Don McGill.

The "NCIS" TV series was created by Donald P. Bellisario and Don McGill. (Photo : Twitter)

Mark Harmon has renewed his contract to continue with “NCIS” season 13, the upcoming installment in the CBS’s hit police procedural action drama series, in which he plays the role of Agent Leroy Jethro Gibbs.

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The "NCIS" season 12 finale episode concluded with the agent shot by a boy in a market in Iraq, leaving the diehard fans to lament over their loss. Harmon’s comment in late show interview with James Corden that everyone in the series is replaceable, lend weight to speculations that he is leaving the show.

While Harmon’s return has been confirmed, his duration in the show is uncertain, according to TV LineIt is yet to be known that if the recuperating agent is in the show for a long haul or is to just wrap up his character with his impending demise.

"NCIS" season 13 is going to kick start exactly where the season 12 finale episode left off. It will have the same cliffhanging drama and will have a "frenetic and chaotic manner" for its backdrop, according to Gary Glasberg, the show executive. If Agent Gibbs continues to live, it will make the team stronger and unified.

"We'll have to see the long-term effects and the psychological effects, but they'll undoubtedly, as they always are, be there for each other," Glasberg told The Hollywood Reporter. "Then we'll see where it takes [us] as we move forward to the coming episode."

In addition, the senior special agent Anthony "Tony" DiNozzo (Michael Weatherly) is likely to stand in for agent Gibbs during his recovery and more in action in the pursuit of terrorist group The Calling.