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Factual error: In the scene where Renč was dying, Dr. Watson examines the dying man and the poisonous arrow that hit him, and concludes that the venom used was curare. Curare is a paralysing poison that causes the body to relax to the degree that respiratory muscles stop contracting and the victim dies of asphyxiation. René on the other hand perished in strong cramps and foaming of his mouth.
Factual error: In the scene where Holmes enters the factory in Germany, a map can be seen on a table with small German black-red-gold tricolor flags sticking up from it. However, the flag of the German Empire at the time of the film's setting (1891) was black, red, and white, and was so from 1871-1918.
Other: When Holmes and his gang are running from the Germans through the forest, one of Moriarity's German lackeys yells that it is time to introduce them to "Little Hansel" (in subtitles). Strangely, what he really yelled was, "zu viele fuchse fuer die kleine huene," or "too many foxes for the little chickens." Not sure why they made such a change in dialogue (where the German phrase was ever thought to fit in).






