In 1970, military doctor Jeffrey McDonald (Gary Cole) reports a hideous and confusing story: A gang of hippies akin to the Manson Family broke into his North Carolina home and slaughtered his wife and two daughters.

…and then…

The Eastburn family murders were the murders of Kathryn “Katie” Eastburn and her daughters, Kara and Erin, which occurred in Fayetteville, North Carolina in May 1985.

What the Hell is in the water at Fort Bragg?