Nancy is intrigued by a magazine article offering a large reward to anyone finding a missing medieval stained-glass window. She invites Bess and George to join her on a search in Charlottesville, Virginia. During the girls' investigation of Ivy Hall, an old rundown, southern mansion, rented by a superstitious actress, they encounter a hostile ghost. Eerie sounds come from a beautiful neighboring estate that is surrounded by a high brick wall. Could these mysterious noises and the ghost at Ivy Hall be connected?