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.
Walter C. Mycroft (1928) was based. Their friendship does not seem to have survived their collaboration. Mycroft was elevated to head of production at Elstree during the 1930s, during which time BIP was reconstituted as the Associated British Picture Corporation. The company released a large number of films on which Mycroft was credited as producer, with varying levels of actual involvement. His adopted son, David Rees Mycroft worked as assistant director on a number of Elstree productions. David Mycroft, who isn't mentioned in Walter Mycroft's autobiography "The Time of My Life", edited by Vincent Porter and published posthumously, was an experimental filmmaker, poet