Detective Tara Augustin, a longtime member of the Montgomery County Department of Police in Maryland, always wanted to work on cold cases. "Throughout my whole career, my goal was to get to the cold case unit," Augustin told ABC News' Stephanie Ramos for "20/20." "These are all major crimes. They're either homicides or rapes and there are ones that haven't been able to be solved. And I like the challenge of trying to look at everything with fresh eyes." In 2022, Augustin got her chance when she was transferred from robberies to the cold case unit, joining forces with another veteran officer, Detective Alyson Dupouy. Augustin and Dupouy's full investigation is revealed in a new "20/20" episode, "First Comes Love, Then Comes Murder," airing Friday, Sept. 12, at 9 p.m. ET on ABC and streaming

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