Young Sherlock Holmes/YMMV

• Genius Bonus: There are some obscure references to Holmes trivia. For example, when Holmes first meets John Watson, he guesses that his first name is James. In "The Man with the Twisted Lip", one of the original Sherlock Holmes stories, Watson's wife addresses him as "James", causing rampant speculation from the fans about whether this was a significant slip or just a sign that Doyle had forgotten his own character's name.
• Viewers are British: The Sdrawkcab Name clue of "Eh tar" being backwards for "Rathe" is a lot harder to spot if you speak a rhotic accent than a non-rhotic one, since with the former you're unlikely to recognize the implied "r" at the end of "Eh tar" in pronunciation (pronounced "etah" in the movie) in the first place.