Sir Arthur Ignatius Conan Doyle was a Scottish writer and physician, most noted for creating the fictional detective Sherlock Holmes and writing stories about him, which are generally considered milestones in the field of crime fiction.

In addition to the Holmes stories, he is known for writing the fictional adventures of 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, non-fiction, and historical novels.