Two journalists, Edward Malone and Challenger’s daughter Enid, set out to investigate London’s spiritualists and attend seances, healings and a haunted house, while the formidable Professor Challenger scoffs and storms. The novel is Doyle’s own case for spiritualism, to which he devoted his last years, and reads as advocacy rather than detective work.
The last Challenger book, essential for understanding Doyle’s later life and beliefs. Download the free EPUB.