Three brutal rapes go unpunished for more than 20 years. But now using investigative genetic geneaology, police finds the rapist living across the country in Georgia. The suspect is a retired federal corrections officer. Joining Nancy Grace to talk about the case: Sacramento DA Anne Marie\xa0Schubert,\xa0Sacramento Police Chief Daniel Hahn, DNA expert with\xa0\xa0Scales Biological Laboratory, Inc George Schiro, Joseph Scott\xa0Morgan\xa0\xa0Forensics expert, Judge Ashley Wilcott\xa0and reporter Dave Mack.