"A Study in Emerald" is a short story written by British fantasy and graphic novel author Neil Gaiman. The story is a Sherlock Holmes pastiche transferred to the Cthulhu Mythos universe of horror writer H. P. Lovecraft. Gaiman describes it as "Lovecraft/Holmes fan fiction". It won the 2004 Hugo Award for Best Short Story. The title is a reference to the Sherlock Holmes novel A Study in Scarlet. "A Study in Emerald" first appeared in the anthology Shadows Over Baker Street, a collection of stories combining the worlds of Arthur Conan Doyle and H. P. Lovecraft; it has subsequently been available as part of Gaiman's short story collection Fragile Things, in the collection New Cthulhu: The Recent Weird, and is available online. The online version takes the form of a Victorian periodical or newspaper, which includes various advertisements that reference characters such as Vlad Tepes, Victor Frankenstein, Spring Heeled Jack, and Dr. Jekyll. In the introduction to Fragile Things, Gaiman cites Philip José Farmer's Wold Newton Universe, Kim Newman's Anno Dracula series (which Gaiman helped create), and Alan Moore's The League of Extraordinary Gentlemen as being the major influences of "A Study in Emerald". When Gaiman was asked if he had any plans to make a follow-up set in the world of the story, he said: "I hope so. I know the title and the protagonist of the next story in it". Source: Wikipedia (en)