Ghosts that don’t go away
“Man” is Margaret and Kate Fox
Spiritualists are those who believe in a continued future existence, and that people who have passed on into the spirit-world can and do communicate with us.
Spiritualists communicate with the spirits of people who have physically died. Such communication is thought to be beneficial to the dead and the living.
Spirits are said to communicate through people with special skills, called mediums.
https://www.gotquestions.org/spiritualism.html