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.