A skeptic spent the night hunting for Civil War ghosts. ‘Did you hear that?’

Vicksburg, Mississippi (CNN) – Near closing time on a recent Fourth of July, Grace Bailey noticed a man approaching along the brick pathway, headed toward the front door of McRaven House in Vicksburg, Mississippi.

Through the foliage lining the walk, she could see he was dressed more formally than the usual tourists at the antebellum home, whose first quarters were built in 1797. As one of two tour guides on duty, Bailey marched back inside to her post at the front door to greet the late-arriving guest. But when she opened the door, nobody was coming up the walk.

While she stood waiting for the man to reappear, though, she realized something eerily familiar about his attire and distinctive hair style, both of which seemed out of place and time. Then, she remembered the other significanc