Sir Arthur Conan Doyle was born on 22 May 1859 in Edinburgh. He studied medicine at the University of Edinburgh and began to write stories while he was a student. Over his life he produced more than thirty books, 150 short stories, poems, plays and essays across a wide range of genres. His most famous creation is the detective Sherlock Holmes, who he introduced in his first novel A Study in Scarlet (1887).

This was followed in 1889 by an historical novel, Micah Clarke. In 1893 Conan Doyle published 'The Final Problem' in which he killed off his famous detective so that he could turn his attention more towards historical fiction. However Holmes was so popular that Conan Doyle eventually relented and published The Hound of the Baskervilles in 1901.

The events of the The Hound of the Baskervilles are set before those of 'The Final Problem' but in 1903 new Sherlock Holmes stories began to appear that revealed that the detective had not died after all. He was finally retired in 1927. Sir Arthur Conan Doyle died on 7 July 1930.

Edgar Allan Poe (1809-1849) is one of America's greatest and best-loved writers.

Known as the father of the detective story, Poe is perhaps most famous for his short stories particularly his shrewd mysteries and chilling, often grotesque tales of horror he was also an extremely accomplished poet and a tough literary critic.

Poe's life was not far removed from the drama of his fiction. Orphaned at a young age, he was raised by a foster family. As a young man, he developed problems with gambling, debts, and alcohol, and was even dismissed from the army.

His love life was marked by tragedy and heartbreak. Despite these difficulties, Poe produced many works now considered essential to the American literary canon.

Maurice Leblanc was a French novelist and writer of short stories, known primarily as the creator of the detective Arsene Lupin.

Charles Dickens was born in 1812 and became the most popular novelist of the Victorian era.

A prolific writer, he published more than a dozen novels in his lifetime, including Oliver Twist, Great Expectations and Hard Times, most of which have been adapted many times over for radio, stage and screen.