Dateline: Secrets Uncovered
How Was Brigida Uto Exposed to Thallium?
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How Was Brigida Uto Exposed to Thallium?

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.

Season 10 Episode 48 - Videos

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2:49
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How Was Brigida Uto Exposed to Thallium?
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2:03
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Doctors Feel the Pressure to Solve Brigida Uto’s Medical Case
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2:00
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Toxicologist Jeff Lapoint Makes a Chilling Discovery in Brigida Uto’s Case
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1:15
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Why Did Police Get Involved with Brigida Uto’s Medical Mystery Case?

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