Leonora Piper

What set Piper apart from almost every other celebrated medium of her era is what she did not do. There were no rappings, no floating trumpets, no ectoplasm, no cabinet and no darkness. She sat in a lit room, went into a trance, and either spoke or wrote, at times doing both simultaneously with different claimed communicators. This mattered enormously to the investigators, because it removed at a stroke the entire apparatus of physical mediumship that had made the other cases so easy to attack: there was nothing to be rigged, and the only question was where the information came from. William James encountered her in 1885 through his mother-in-law and studied her himself before handing the work to the Society for Psychical Research, and it is Piper he had in mind in the remark about needing only one white crow to disprove the claim that all crows are black. He never said the white crow proved survival, only that it proved the blanket dismissal false, and the distinction is one his admirers frequently drop. Her career also ran on a scale that is easy to underestimate. She sat for investigators on both sides of the Atlantic for more than thirty years, produced a volume of transcript that fills a substantial run of the Society for Psychical Research's Proceedings, and was never, at any point in that period, caught doing anything improper. Whatever explains the case has to explain that duration as well as the content.

The precautions taken against Piper were more thorough than those applied to almost any other claimant of the period. Richard Hodgson employed private detectives to establish whether she or her family gathered information about sitters. Sitters were introduced anonymously, sometimes under false names. In 1889 she was taken to England, where Oliver Lodge and others arranged sittings with people she had never met, in a country whose newspapers and social registers she had no access to, and Lodge went so far as to replace his household servants for the duration so that nothing could be learned from them. No fraud was found by anyone at any point across several decades.

The sceptical case therefore does not rest on exposure but on mechanism: that a skilled trance speaker produces a large volume of statements, that sitters actively help by responding to fishing questions and by remembering the successes, that the claimed communicators were vague when tested precisely, and that the alleged personalities behaved in ways more consistent with dissociated fragments of Piper herself than with surviving individuals. Piper's own view fluctuated and she once told a newspaper she did not know whether the spirits were real. The case is unresolved rather than concluded, which is the honest description.