Did Sherlock Holmes use opium?
Actually, Sherlock Holmes usually does morphine and occasionally does cocaine. In “The Sign of Four,” there is a detailed passage where Dr. Watson looks on as Holmes inserts a drug needle into his arm. There are multiple references throughout the books, and some fans theorize that the “Great Hiatus” (time when Holmes and Moriarty were supposedly dead) was actually a time when Holmes cured his cocaine addiction. Holmes also does opium (that’s what the pipe is for.