Of the thousands of people murdered every year in the United States, several remain unidentified. Many of these individuals remain unidentified for years or even decades after their deaths. These cases include that of Tammy Jo Alexander, who was murdered in 1979 and remained an unidentified decedent until 2015, Reet Jurvetson, who was murdered in 1969 and whose body remained unidentified for 46 years, and Alisha Heinrich, a toddler thrown alive from the Interstate 10 bridge in 1982 and identified via genetic genealogy in 2020.