Minor Sherlock Holmes characters a character called Wiggins (played by Graham Armitage) who is a footman at the Diogenes Club. He delivers a note to Mycroft Holmes (played by Christopher Lee) and receives instructions concerning various items. The character, credited as "Bill Wiggins", also appears in the series three finale of "Sherlock" portrayed by Tom Brooke as a drug user who actually demonstrates the beginning of Sherlock's deductive skills, and later appoints himself a "pupil" of Sherlock's. Some fictional characters associated with Sherlock Holmes are not part of the Conan Doyle canon and were created by other writers. Auguste Lupa is the son of
Minor Sherlock Holmes characters their relationship. She also posed as John Watson's therapist and then later revealed herself to be Eurus Holmes, and at the end of the episode shoots John Watson with a handgun. In the last episode, "The Final Problem", it is revealed that Sherrinford is in fact a high-security complex on an island to house some of the most dangerous criminals in the world, including Eurus. With Eurus having simply shot John with a tranquiliser dart, Sherlock and John stage a scenario where Mycroft will admit Eurus's existence. Mycroft explains that Eurus was the youngest child, 8 years younger than Mycroft