The Adventure of the Greek Interpreter is seen writing a story in his blog titled "The Geek Interpreter". In the 2014 episode "The Empty Hearse", Sherlock and his brother Mycroft have a casual competition over analyzing a certain knitted hat, a reference to the discussion in this short story on analyzing a man they see on the street through the window of the Diogenes Club. In the 2015 special, The Abominable Bride, a Mr Melas is also referenced as waiting to see Mycroft after he has discussed a case with his brother and Dr. Watson. In the seventh episode of the NHK puppetry Sherlock Holmes, Sherman,
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