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Dateline Secrets Uncovered

How Was Brigida Uto Exposed to Thallium?

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Brigida Uto's thallium levels were astronomical. Police now have to work to figure out where she could have been exposed to this life-threatening chemical.

Tags: Craig Melvin, Crime, dateline, oxygen, reality, Secrets Uncovered, True Crime
S10 E483 minTV-14HighlightReality and Game ShowPrimetime
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