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,
Mary Russell (character) as well as meeting Holmes, Russell prepares for and eventually passes the entrance exams to Oxford University, where she reads chemistry and theology. In addition to Holmes, who acts a mentor and father substitute early in their relationship and eventually becomes her husband, Russell becomes close to other characters from the Holmes canon: she considers Mrs. Hudson, who has accompanied Holmes to Sussex as his housekeeper, to be a mother figure, and she refers to Dr. Watson as "Uncle John" and Mycroft Holmes as "Brother Mycroft." She is also close to her farm manager Patrick and tends to make friends