Filed by Fletcher Moody — Literary Correspondent In 1921 I was sent to a lecture hall in London to watch the creator of Sherlock Holmes make a fool of himself, and I went, I admit, looking forward to it. Sir Arthur Conan Doyle was by then the most famous author alive, and he had spent the past several years using that fame to promote spiritualism — séances, spirit photography, communication with the dead. The newspapers had begun to treat him as...