Sir Arthur Conan Doyle is known as the creator of the hyper-rational character Sherlock Holmes. History took a crooked twist then when Doyle also became one of the more famous proponents of supernatural causes such as Spiritualism and the existence of the Cottingley Fairies. Spiritualism is a religious belief structure that has room for not only faith in God, but communication with the spirits of the dead. Doyle was such a strong believer in Spiritualism that he penned two works of nonfiction on it: The History of Spiritualism and The Edge of the Unknown. These beliefs eventually ended his friendship with famed magician Harry Houdini. A fictional dissection of the destruction of their friendship can be read in the book Man from Beyond by Gabriel Brownstein.