Sir Arthur Ignatius Conan Doyle was a British author most noted for his stories about the detective Sherlock Holmes, which are generally considered a major innovation in the field of crime fiction, and for the adventures of Professor Challenger. He was a prolific writer whose other works include science fiction stories, historical novels, plays and romances, poetry, and non-fiction. Here are two of his best stories, The New Catacomb and The Beetle-Hunter.