One of history's deadliest duos, the Harpe brothers murdered, plundered and pillaged across Kentucky, Illinois and Kentucky in the late 18th century. 

Source Materials:

Kathy Weiser, “The Vicious Harpes – First American Serial Killers” https://www.legendsofamerica.com/we-harpes/

https://www.appalachiabare.com/the-devil-in-appalachia-the-bloodthirsty-harpe-brothers/- Delonda Anderson

DeLani R. Barlette, “The Harpe Brothers: America’s First Serial Killers” - https://medium.com/lessons-from-history/the-harpe-brothers-americas-first-serial-killers-8741fbc7fad2

Hall, Hon. Judge. Letters from the West; Containing Sketches of Scenery, Manners, and Customs; and Anecdotes Connected with the First Settlements of the Western Sections of the United States. London: Henry Colburn, 1828.