The Adventures of Sherlock Holmes and Dr. Watson (film) invited to The Diogenes Club by Sherlock's older brother Mycroft. The club hosts the most unsociable men of London, and they have banned talking. Once there, Mycroft, asks him to help Lady Eva Blackwell. She is being blackmailed by one of the most villainous men of London, Charles Augustus Milverton who is demanding £7,000 for some letters he has stolen from her, threatening to release them to the public if she does not pay the ransom. Upon their release, the letters would cause a scandal that would end Lady Eva's marriage engagement. Sherlock agrees to help her. The same day,
Sherlock Holmes (2009 film) it out further. Some sequences in the movie were more than suggested by uncredited incidents found in a 1979 novel "Enter the Lion: A Posthumous Memoir of Mycroft Holmes". Lord Blackwood's character was developed as a nod to Victorian interests in spiritualism and the later influence of Aleister Crowley. The producer felt he was "almost clever" pitting Holmes, who has an almost supernatural ability to solve crimes, against a supposedly supernatural villain. The plot point, moreover, nods to the Holmesian tale of "The Hound of the Baskervilles", where a string of seemingly supernatural events is finally explained through intuitive reasoning