This is an extremely faithful adaptation of the original Doyle novel, and for purists, it can hardly be objected to (although the novel does start and end with Holmes' drug usage -- but is clearly eliminated in this adaptation, apparently by Jeremy Brett who thoroughly objected to that aspect of Doyle's character). As for the uninitiated, or general viewer, it's a bit of a slog. Brett is snappish and somewhat rude at times, unlike the Holmes of the stories, but otherwise excellent, with a gritty baritone that is quite commanding. Ronald Lacey almost steals the show as the Sholto brothers (and it's sad that he would die only a few years later). The real problem with this film is the slack editing and low key direction. Many scenes provide opportunity for dramatic punch but are handled matter-of-factly, with no help from an equally low-key music score. Also, the series of requisite backstories presented in the novel is too much for the film, getting to a point where we're even given a flashback-within-a-flashback. And to top it off, the climax of the story is yet another backstory flashback. It IS Doyle and it IS faithful, so you can't complain that the filmmakers took liberties and fouled things up... but the weakness of the novel as film material is also exposed. Purists though, should be delighted.
