The Adventure of the Greek Interpreter Sherlock Holmes, far from being a one-off in terms of his powers of observation and deductive reasoning, in fact has an elder brother whose skills, or so Holmes claims, outstrip even his own. As a consequence of this, Watson becomes acquainted with the Diogenes Club and his friend's brother, Mycroft. Mycroft, as Watson learns, does not have the energy of his younger brother and as a consequence is incapable of using his great skills for detective work: In spite of his inertia, the elder Holmes has often delivered the correct answer to a problem that Sherlock has brought to him.
The Adventure of the Golden Pince-Nez Anna Karenina dies. The Granada TV adaptation with Jeremy Brett differs slightly. A heavily bearded member of the Russian Brotherhood lurks in the garden, and administers final justice to the villainous Professor. Anna's key was her own original. Dr. Watson is replaced by Sherlock Holmes's brother, Mycroft Holmes, due to the unavailability of Edward Hardwicke for the episode. During Holmes' brother's investigation at the crime scene with Inspector Hopkins, Sherlock Holmes mumbles about the irony that their father gave his magnifying glass to Mycroft who has always been depicted as lazy and lethargic. Also, Mycroft Holmes remarks that their father