"A Study in Scarlet" is the first published story of one of the most famous literary detectives of all time, Sherlock Holmes. Here Dr. Watson, who has just returned from a war in Afghanistan, meets Sherlock Holmes for the first time when they become flat-mates at the famous 221 B Baker Street. In "A Study in Scarlet" Sherlock Holmes investigates a murder at Lauriston Gardens as Dr. Watson tags along with Holmes while narratively detailing his amazing deductive abilities. A Study in Scarlet was the first work of fiction to incorporate the magnifying glass as an investigative tool. "What you do in this world is a matter of no consequence. The question is what can you make people believe you have done." Arthur Conan Doyle, A Study in Scarlet "So all life is a great chain, the nature of which is known whenever we are shown a link of it." Arthur Conan Doyle, A Study in Scarlet