Charges have been filed in the 10-year-old murder case of Sherry Black. How did investigators book a suspect? "Surreptitiously" obtained DNA. We're diving into what that could mean with KSL Newsradio investigative reporter and COLD podcast host, Dave Cawley. Then, we interview Salt Lake County District Attorney Sim Gill about why they didn't find a print match in the past several years, and how often DNA helps crack criminal cases. 

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