Sherlock Holmes is undoubtedly the most famous detective that ever appeared in English literature and one of the most famous fictional characters of all time. He lived, most of the time with his loyal assistant and his biographer or chronicler Dr. John Watson, and practised as a 'consulting detective' between 1881 and 1904 at the 'world's most famous address' 221B, Baker street, London; which houses today the Sherlock Holmes Museum, the first ever museum dedicated to a fictional character.

According to the Guiness Book of World records, Sherlock Holmes is the 'most portrayed movie character' with 70 actors playing the role of this super-sleuth in more than 200 films. Sir Arthur Conan Doyle first introduced this undying detective character in his book 'A Study in Scarlet' in 1887. He is supposed to have modelled Holmes after university professor Dr. Joseph Bell who had shown remarkable powers of deductive reasoning for which Sherlock Holmes was famous for.

Holmes has been endowed with uncanny abilities of observation and deductive reasoning and his intellectual prowess was extremely high. Many scientists and criminologists have commented that his analytical methods of detection were very accurate and scientific. Sherlock Holmes appears in 4 novels and 56 short stories written by Conan Doyle and later many other writers and TV and film producers used this unique character in their works. The story 'Red Headed League' which appears in the short story collection 'the adventures of Sherlock Holmes' was one of the favourites of Conan Doyle himself.