Spectral evidence refers to a witness testimony that the accused person's spirit or spectral shape appeared to him/her witness in a dream at the time the accused person's physical body was at another location. It was accepted in the courts during the Salem Witch Trials. The evidence was accepted on the basis that the devil and his minions were powerful enough to send their spirits, or specters, to pure, religious people in order to lead them astray.
In spectral evidence, the admission of victims' conjectures is governed only by the limits of their fears and imaginations, whether or not objectively proven facts are forthcoming to justify them. [State v. Dustin, 122 N.H. 544, 551 (N.H. 1982)].