Spiritualism, as a formal movement, is generally figured to have grown out of interest in the experiences of two young girls, Margaret and Catherine Fox. In 1847 people came to believe that the farm house in which the family lived near Hydesville, New York, was haunted, and that ghosts would respond to questions asked by the sisters by making rapping noises.
The young women later became two of the most prominent Spiritualist mediums. At one point they confessed, saying that they had mostly created the sounds in their house by “popping” their knee joints.
The idea that ghosts were prone to sending messages by knocking in code had already circulated for a time in Europe. It came to be an extremely widespread belief. One of Ivan Turgenev’s best stories is an alternatively funny and poignant piece about belief in ghosts is called Knock, Knock, Knock. It was first published in 1970.
While mainstream denominations were generally dismissive or hostile to Spiritualism, it appears that most Spiritualists, and the various churches they formed, were self-identified as Christian.
One of many things more conventional churches found objectionable was that there gradually grew up among many Spiritualists a shared belief that the next life involves a place or state of being called “The Summer Land”. This was a sort of bland happy hunting ground which lacked both the glory of salvation and the horror of damnation. Mostly it sounded kind of insipid; ghosts sometimes blathered about how so-and-so on the other side had a toothache or something similarly wordly and pedestrian.
A minister who identified himself as a “Christian Spiritualist” provided an interesting footnote to the Jack the Ripper investigation. He told authorities that he was riding a bus one day when he got an overwhelming feeling that a passenger seated nearby was Jack the Ripper. He tried following the man when he left the bus, but lost him in a crowd. Later he saw the same man in the street and followed him home to learn who he was.
The man was a successful doctor, and, when questioned by police, said he honestly did not know if he was Jack the Ripper or not. It developed that he had been having trouble of late with black-out spells, and could not account for his actions or whereabouts during these periods. Ultimately the police determined he was not a viable suspect. The suggestion that the Spiritualist had heard about the doctor’s problems and chose to capitalize on them for purposes of self-publicity immediately suggests itself.
The extent to which there are serious, sincere practitioners of Spiritualism as a religion and there are pure hucksters out to bilk the credulous can probably be argued endlessly. It is known that within the “trade” there is talk of “open” and “closed” mediums. An open medium networks with other charlatans to exchange information about people who are willing to pay for mediumistic services.
There was even said to have been a large reference book or directory of private information about such people which circulated among mediums. Possibly something of the kind is still in use. James Randi has written about this from time to time, as did the late William Lindsey Gresham, probably best known as the author of the novel Nightmare Alley. Randi has written about his experience of visiting a Spiritualist “camp” which convenes in Florida every year, and of seeing some not-very-clever fortune telling trickery there.
It has been a long time since I read it, but I recall that Ronald Pearsall’s 1973 book The Table Rappers gives a good overview of the range and variety of Spiritualist beliefs in the 19th Century.