SERIAL KILLER: On The Colonial Parkway Part 1

In 1986, park rangers near Virginia's Colonial Parkway get notified of a possible traffic accident. When rangers arrive, they are confronted with a violent scene. The deaths of Cathleen Thomas and Rebecca Dowski. Though it is brutal and seemingly unprovoked, the public doesn't start getting truly concerned until two more young people, Robin Edwards and David Knobling, are murdered just off the Parkway.