The famous detective created by Arthur Conan Doyle is Sherlock Holmes. First appearing in the novel "A Study in Scarlet" in 1887, Holmes is renowned for his keen observational skills, logical reasoning, and use of forensic science to solve complex cases. He is often accompanied by his loyal friend Dr. John Watson, who serves as the narrator for many of Holmes's adventures. The character has become iconic in literature and popular culture, inspiring numerous adaptations in film, television, and theatre. Holmes's stories often explore themes of justice, morality, and the nature of crime.