Their granddaughter and her friend were killed 4 years ago. They want help to catch the killer
(CNN.com US)

In early 2017, the rural community of Delphi, Indiana, was exactly as you might envision a small town -- a main street, a few local restaurants, and the close-knit homes of 14-year-old Liberty German and her good friend, 13-year-old Abigail Williams.