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 pastiches also makes a minor but significant appearance in Warren Ellis and John Cassaday's comic book series "Planetary". Michael P. Hodel and Sean M. Wright presented a mystery-adventure "Enter the Lion: A Posthumous Memoir of Mycroft Holmes" (1979) in which Sherlock's older brother prevents a conspiracy involving a return of the American "colonies" to Great Britain. Sherlock makes appearances with Victor Trevor (from The Adventure of the Gloria Scott), Professor Moriarty and Moriarty's father. Carole Nelson Douglas has written a spin-off series centring upon Holmes' nemesis Irene Adler. The first book is titled "Good Night, Mr. Holmes" and takes place concurrently