The Society for Psychical Research was founded in 1882 by a circle of serious minded Victorian intellectuals who wanted to explore the curious range of phenomena that had manifested across the West (in particular) since about the 1850s. It was an attempt (which still goes on!) to find some order in all those tantalising phenomena that seemed to suggest an invisible world of ghosts, seances, ESP, predictions, reincarnation and all manner of weirdness that hovers the border between science, superstition and mental illness.
Among the founders were the philosopher and fellow at Trinity College Cambridge, Henry Sidgwick, the Classical scholar F W H Myers, who both asserted that when they passed over they'd try and get back in touch. The first part of The Imortalisation Commission tells the story of this pursuit of reliable evidence of an afterlife.