CBS orders NCIS season 17.
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NCIS stars Mark Harmon as a former U.S. Marine sniper who commands the titular Naval Criminal Investigative Service.
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In 2018, NCIS was the fourth most-watched TV show.
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NCIS spawned the spinoff NCIS Los Angeles.
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NCIS also inspired the spinoff NCIS New Orleans.
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NCIS was co-created by Donald P. Bellisario, the mind behind Magnum P.I.
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NCIS continues to be a ratings powerhouse for CBS.
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