There have been so many versions of Sherlock Holmes, but most are tame efforts. Basil Rathbone did well (mostly because of Nigel Bruce's Watson), but he only made five or six movies.
Here, Jeremy Brett gives stunningly accurate presentations of Holmes, as provided by the classic books. He really does make one not want to see the other recent attempts.
The only problem is there is no mystery, as just about everybody knows the stories - some even word for word - therefore the plot is secondary to the production and acting performances. In this case, everyone got it right!