In Massachusetts, Karen Read's retrial continues with new evidence and an emotional witness. In Ohio, an arson plot involving a latex mask and a wig points investigators to a decades-old murder. Plus, the latest pre-trial rulings for Sean Combs and Bryan Kohberger. And a sheriff on keeping courtrooms safe. 
Find out more about the cases covered each week here: www.datelinetruecrimeweekly.com 
Listen to Andrea's reporting on the Nevaeh Kingbird case here: https://www.nbcnews.com/dateline/dateline-missing-in-america-podcast/dateline-missing-america-podcast-covers-october-2021-disappearance-nev-rcna86829

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