450: The Murderous Harp Brothers Revisited w/ Katherine Grandjean

The Harp(e) brothers have been called America's first serial killers, once notorious enough to be the stuff of folklore and legend before fading into obscurity. In the chaos of the post-Revolutionary frontier, the two men committed dozens of murders across Kentucky and Tennessee, their wives traveling alongside them the entire time. My guest is Katherine Grandjean, author of "Kingdom of Devils: A…