In Guy Ritchie’s re-imagining of the classic Arthur Conan Doyle sleuth, Sherlock Holmes, Robert Downey Jr. plays the titular character, and Jude Law plays Dr. Watson.  The film starts in 1891’s London, where Holmes and Watson manage to stop Lord Blackwood (Mark Strong) from successfully enacting a human sacrifice ritual as part of the dark arts.  During the three months between Blackwood’s capture and his execution date, Holmes has grown bored, Watson has become engaged, and soon the mysterious Irene …