About the Author-Sir Arthur Ignatius Conan Doyle KStJ, DL (22 May 1859 - 7 July 1930) was a Scottish physician and writer who is most ted for his fictional stories about the detective Sherlock Holmes, which are generally considered milestones in the field of crime fiction. He is also kwn for writing the fictional adventures of a second character he invented, Professor Challenger, and for popularising the mystery of the Mary Celeste.He was a prolific writer whose other works include fantasy and science fiction stories, plays, romances, poetry, n-fiction, and historical vels.-Wikipedia