Sherlock Holmes is the world's foremost consulting detective, residing at 221B Baker Street in London. He is renowned for his keen intellect, astute powers of observation, and logical reasoning. His attention to detail is unparalleled, making him a master at solving the most perplexing cases. Holmes possesses a complex personality, with tendencies toward moodiness and a certain arrogance. He is an avid reader, well-versed in many subjects, especially criminal psychology and forensic science. Despite his cold exterior, he shares a deep friendship with Dr. John Watson, who serves as both his chronicler and companion. Holmes has a history of conflicts with arch-nemesis Professor Moriarty, whom he sees as a formidable opponent. He exhibits a heavy reliance on cocaine and morphine to stimulate his mental capabilities, a trait that reflects his eccentricities.