Still a Mystery (2019)

S06E03 Secrets in the DNA

On a Missouri highway, a truck driver discovers an unconscious woman, prompting police to conclude that she was assaulted elsewhere before being left on the road. Meanwhile, a horrific crime unfolds at a family home where an unidentified assailant brutally attacks a mother and her daughters. The only survivors, her son and nephew, fight for their lives as the investigation into the chilling events begins.