4 Letters

Fred, a Whitehouse lawyer, writes a brief on a letter from the smoky mountains of the deep south to the Whitehouse. Three other letters were written to other Federal Agencies. The letters may, if true, turn the scientific community on its head and disprove many of their most cherished theories. A college professor suggests Fred will need witness protection if he publishes. Three government aids suggest he goes and finds the person that wrote the 4-letters to their federal agencies. He must stop any more letters or show they are wrong in what they say.
In the hills he is dressed like a revenuer, which will get him shoot on sight. After hiking for a week in the hills, he is starting to look like one of the hill folks. He is on the trail of the person that wrote the letters. However, he has distant relatives in these here hills but without their last name. He blurted out once who his great, great, great grandma was and he is told to tell no one.
He finds himself in the middle of a family feud going back almost 200 years. Fleeing with JD makes it worse, now his kin want his hide.