Seance

Modern Spiritualism dates itself to a specific house and a specific year: in 1848, the young Fox sisters of Hydesville, New York, reported mysterious rapping sounds that they and their family came to believe were communications from the spirit of a murdered peddler, and the sisters' subsequent public demonstrations of spirit rapping made them the first celebrity mediums of a movement that spread with startling speed across the United States and then to Britain and continental Europe within a decade.

The seance format that grew up around the Fox sisters' example, a small group seated around a table with a medium seeking contact with the dead, became the movement's central rite almost immediately, and its popularity is inseparable from the era's circumstances: the American Civil War and, later, the First World War each drove huge numbers of the bereaved toward mediums promising contact with sons and husbands lost in numbers no previous generation had grieved at once. Spiritualism's appeal was never only consolation. The movement attracted early and disproportionate support from campaigners for women's rights and abolition, since trance mediumship offered women a socially sanctioned public voice at a time when few other platforms existed, and its egalitarian theology, holding that spiritual truth could be verified empirically rather than received on clerical authority, fit an age captivated by science and sceptical of establishment religion alike.

Seances took two broad forms as the movement matured. Mental mediumship centred on trance speech, automatic writing or clairvoyant impressions delivered by a medium in an altered state, while physical mediumship promised phenomena observers could witness directly: raps and knocks, moving furniture, materialised limbs or full figures, and objects appearing or disappearing in darkened rooms, forms of demonstration that drew the most sustained scientific attention and the most damaging exposures. Serious investigators took the claims seriously enough to test them: physicist William Crookes conducted extended experiments with the medium Florence Cook in the 1870s and published findings sympathetic to genuine phenomena, while the Society for Psychical Research, founded in London in 1882, brought systematic and often sceptical scrutiny to physical mediumship across decades of casework. That scrutiny caught real and repeated fraud.

Numerous prominent physical mediums, including cases investigated by the Society for Psychical Research and by individual researchers such as Harry Houdini, who made exposing fraudulent mediums a personal campaign in the 1920s, were caught employing trick cabinets, confederates, and sleight of hand, findings that historians of the movement treat as well documented fact rather than mere accusation even as they recognise that fraud exposure never fully explained away every reported phenomenon to sceptics' or believers' satisfaction. Modern Spiritualism survives today as an organised, registered religion with its own churches, chiefly in Britain, the United States and Brazil, holding the seance as one practice among a broader theology and pastoral life.