Inside 'Devastated' Mark Harmon's Secret Heartbreak!

Mar. 17 2017, Published 7:23 p.m. ET

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The death of Mark Harmon’s beloved friend left him at a loss for words. A source close to the NCIS star exclusively told Radar how hard he took the passing of showrunner Gary Glasberg. An insider revealed, “After the passing of Gary, Mark was very much not himself."

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