Did Gibbs and the team manage to clear the name of Marine Sergeant John Ross?
That was the plan on NCIS Season 15 Episode 16 when cyanide was found in multiple care packages he sent to active-duty marines.
With the evidence stacking up against John, it became apparent that the team was going to have to dig into his past to get closer to the truth.
However, things took a wild turn when it became apparent someone was acting out of spite.
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Paul Dailly is a staff writer for TV Fanatic. Follow him on Twitter.