Sir Arthur Ignatius Conan Doyle (1859 - 1930) was a British writer best known for his detective fiction featuring the character Sherlock Holmes.

Originally a physician, in 1887 he published A Study in Scarlet, the first of four novels about Holmes and Dr. Watson.

In addition, Doyle wrote over fifty short stories featuring the famous detective.

The Sherlock Holmes stories are generally considered milestones in the field of crime fiction.
(from wikipedia.org)

The Adventures of Sherlock Holmes is a collection of twelve short stories by Arthur Conan Doyle, featuring his fictional detective Sherlock Holmes.

It was first published on 14 October 1892; the individual stories had been serialised in The Strand Magazine between July 1891 and June 1892.
(from wikipedia.org)