Karen Stitt, a 15-year-old student at Palo Alto High School, was sexually assaulted and stabbed to death in Sunnyvale, California, on September 3, 1982. From Wikipedia
Gary Ramirez, 78, received a life sentence for the rape and murder of 15-year-old Karen Stitt, bringing closure to a 43-year-old case solved with modern genetic genealogy.