Silent Witness - Season 23 Episode 9

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    23x09 |The Greater Good (1)

    February 3, 2020, 10:00 pm

    Thomas investigates the case of John Sealy, a soldier who died during a military training exercise involving exposure to CS gas. It appears John died from an aneurysm, but when Thomas discovers the trace of a possible nerve agent in his system, the family are desperate for answers.