A tragic case that has baffled Indiana authorities for three years will get some much-needed national attention, and perhaps there will finally be a break in the horrific case. The murders of Libby German, 14, and Abby Williams, 13, from Delphi, Indiana will be featured on a show on the on Investigation Discovery channel. The best friends went for a walk in the woods in their small town and never came home. Their bodies were found the next day. At a loss for leads, authorities are getting help from "In Pursuit with John Walsh." For its season finale Walsh’s son Callahan goes to Delphi to tell this story.