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 Greek Interpreter a female pupil of Beeton School who can communicate with animals is kidnapped. She is made to interpret dog's language to find a bone of Neanderthal stolen from a laboratory and taken away by a dog but no clue is found. Holmes decides to solve the case with the help of his elder brother Mycroft and visits him in the Diogenes Club in Dealer house where he lives. Though Holmes is estranged from Mycroft, the brothers and Watson discover the bone and find out that it's Wilson Kemp, a pupil who lives in Dealer house stole it but Mycroft tries