Adventures of Sherlock Holmes

Sir Arthur Ignatius Conan Doyle, DL (22 May 1859 - 7 July 1930)
was a Scottish 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 the adventures of
Professor Challenger.
The Adventures of Sherlock Holmes is the best collection of Sherlock Holmes short stories. It consists of 12 different parts (adventures):
I. A Scandal in Bohemia
II. The Red-headed League
III. A Case of Identity
IV. The Boscombe Valley Mystery
V. The Five Orange Pips
VI. The Man with the Twisted Lip
VII. The Adventure of the Blue Carbuncle
VIII. The Adventure of the Speckled Band
IX. The Adventure of the Engineer's Thumb
X. The Adventure of the Noble Bachelor
XI. The Adventure of the Beryl Coronet
XII. The Adventure of the Copper Beeches
Sir Arthur Conan Doyle has created a great detective book, so you have to read The Adventures of Sherlock Holmes ASAP :). Enjoy!