Sherlock Holmes is a fictional detective created by Sir Arthur Conan Doyle in 1887. Holmes lives at 221B Baker Street in London and works as a consulting detective, using observation and deduction to solve complex cases. He is accompanied by his friend and chronicler Dr. John Watson. Some key facts about Holmes include that he has profound knowledge of chemistry and anatomy, plays the violin, and occasionally uses morphine. Holmes became the archetype for detective characters and inspired many authors after Conan Doyle.