Context
Sullivan, Maine. 1797. Nelly Butler, born Nelly Hooper, died in childbirth, and her baby died with her. Two years later, faint knocking began in the cellar of the Blaisdel house on the shore of Taunton Bay. Abner Blaisdel headed the household. His daughter Lydia, about 15, heard it most often. The knocks could go on for several minutes. Then a voice would call the family down.