The Moonstone (1868), is often thought to be his masterpiece. In 1887 Arthur Conan Doyle introduced Sherlock Holmes, whose mysteries are said to have been singularly responsible for the huge popularity in this genre. The genre began to expand near the turn of century with the development of dime novels and pulp magazines. Books were especially helpful to the genre, with many authors writing in the genre in the 1920s.
An important contribution to mystery fiction in the 1920s was the development of the juvenile mystery by Edward Stratemeyer.
Stratemeyer originally developed and wrote the Hardy Boys and Nancy Drew mysteries written under the Franklin W. Dixon and Carolyn Keene pseudonyms respectively (and were later written by his daughter, Harriet Adams, and other authors).
The 1920s also gave rise to one of the most popular mystery authors of all time, Agatha Christie, whose works include Murder on the Orient Express (1934), Death on the Nile (1937), and the world's best-selling mystery And Then There Were None (1939).An early work of modern mystery fiction, Das Fräulein von Scuderi by E. T. A. Hoffmann (1819), was an influence on The Murders in the Rue Morgue by Edgar Allan Poe (1841). Wilkie Collins' epistolary novel The Woman in White was published in 1860......