We picked up a copy of Burgoynes' Haunted Eastern Shore (MD) and began to read about the local area.
One that intrigued me was The Hanging Tree, Tunis Mills. Well, we found it and it is not too far from downtown Easton.
I'll let you research the validity of the claim of this Dark Tourism attraction, but to find it, check out my Panoramio (and Google Earth) location.