The man who killed 13-year-old Abby Williams and 14-year-old Libby German on a hiking trail in Delphi, Indiana, in February 2017 is still unknown and free despite a grainy photo of him approaching the girls. Nancy Grace talked to Libby’s grandparents, Mike and Becky Patty, and Abby’s mother Anna Williams in thia special Crime Stories episode record live at CrimeCon 2018.

They are joined in an examination of the case by forensics expert Joseph Scott Morgan, Private Investigator Vincent Hill, Atlanta Juvenile Judge & Lawyer Ashley Willcott, and Atlanta lawyer Renee Rockwell.

Delphi murders update: Sheriff corrects previous statement, says suspect has NOT been spotted in TN

“Crime Stories with Nancy Grace” is a national radio show, heard on SiriusXM’s Triumph Channel 132, five times a day. You can also subscribe and download the daily podcasts at iTunes and Google Play.

[Feature Photo: Nancy Grace, Mike and Becky Patty, and Anna Williams/Photo via Nancy Grace]