Corrected entry: In scene of Piccadilly Circus, the statue of Eros is facing the wrong way. This statue was removed for protection during WWII and when returned was put the wrong way around therefore, in this scene the original position should be shown, with Eros' bow landing in Shaftsbury Avenue. (01:04:05)
Corrected entry: Holmes' ''stun baton'' works multiple times without having to recharge. That is not how electricity works. If it has the ability to discharge, it will keep going until the charges between the device and the ground are equal, which would be after one time. And batteries that small didn't exist then.
Corrected entry: After Holmes and Watson get to the factory on the river and see that Adler is chained to a meat hook headed for the bandsaw, the voice of Blackwell tells them that she followed them there. How was it possible for her to have followed them when they got there by a slow boat and then how could she have managed to have already gotten captured and chained up when they had just gotten there?
Corrected entry: When Holmes, Watson and Mary are having dinner, she throws red wine in Holmes' face and it runs down all over him. He is wearing a white collar, yet when the camer pans back to him, there isn't a spot on him nor the fresh white collar.
Corrected entry: After Holmes and Watson found the ginger midgets, we see them walking in an alleyway and talking about the wristwatch. In front of them happens to be gypsy that talked to Watson a few minutes later. She stays in front of the crowd and makes a left and Sherlock and Watson go right. How can the gypsy meet Sherlock and Watson if she went away from them?
Corrected entry: In the scene later in the movie where Irene opens the door to her room, you will see Sherlock kneeling, and was trying to "pick the lock." Well, when he stands up, and in every part of those shots with him in that room, you will see no lock tools.
Corrected entry: After the explosion in the factory, Holmes, Watson, and Irene Adler are all shown with scars from the blast. Watson's injuries are on his left side, despite the fact that it was his right side that was facing the explosion. Since he was injured by flying shrapnel, it should be his right arm and shoulder that is injured, not his left. Likewise, Adler's scars are on her right side, when her left side was facing the explosion.
Corrected entry: In the beginning of the movie, Holmes is shown trying to create a silencer for a revolver. Due to the way revolvers are constructed, it is impossible to make a silencer for one, with the exception of the M1895 Nagant. Someone that knows enough about physics to attempt to create a silencer would have known this.
Corrected entry: When the large French thug reappears, he says "Tu m'as manqué?" and the subtitles read "Did you miss me?" This is a very common anglophone mistake - a native French speaker would actually say "Je t'ai manqué?", which would translate literally to "was I missing to you?" but has the idiomatic meaning of "Did you miss me?
Corrected entry: When Holmes jumps out the window after the girl, as he walks he has a scarf on, then he approaches the circus with no scarf and grabs one off a woman to put round his neck.
Corrected entry: When Holmes electrocutes the French giant, he jumps back at least 10 feet each time. Electricity doesn't do that to you. It causes your muscles to contract, which, if anything, would only cause you to jump forward, but never more than three feet.
Corrected entry: Sherlock Holmes says that the toxin can be made only with some herbals found in the Black Sea Region of Turkey. Turkey was founded in 1923. The movie time line must be before 1894, because the Tower Bridge was opened in that year. Turkey at that time was called Anatolia, and was part of the Ottoman Empire. (01:58:10 - 01:58:55)