Sir Arthur Conan Doyle’s classic Sherlock Holmes tales have had many film and TV iterations, most recently with Robert Downey Jr. and Benedict Cumberbatch playing versions of the sleuth. Now we’re about to see an aging Holmes, played by Ian McKellen, in Bill Condon’s Mr. Holmes, where he’ll embark on one last investigation with a much younger sidekick. (Though we’re secretly hoping Patrick Stewart shows up as Watson at some point.)