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Illinois Unsolved: The Murder of Holly Cassano | How DNA Solved a 10-Year Illinois Cold Case
On November 2, 2009, 22-year-old mother Holly Cassano was found murdered inside her home in Mahomet, Illinois.Investigators recovered unusually powerful forensic evidence almost immediately. Holly’s attacker had been injured during the assault, leaving his blood throughout the mobile home. Semen recovered from Holly’s body came from the same unknown man. Police had the killer’s DNA—but there was no match in CODIS and no name to attach to it.Over the next nine years, investigators interviewed witnesses, examined injuries, followed leads and collected DNA from more than 150 men. Every one of…
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