Sherlock Holmes is a fictional detective created by British author Sir Arthur Conan Doyle. is known for his keen observation, logical reasoning, and use of forensic science to solve complex cases. He resides at 221B Baker Street in London, where is often accompanied by his loyal friend and chronicler, Dr. John Watson. Holmes is by his sharp intellect, eccentric personality, and distinctive deerstalker hat and pipe. His adventures have been widely adapted into various media, making him one of the most enduring and popular characters in detective fiction.