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.
Mr. Wong (fictional detective) Mr. Wong (fictional detective) James Lee Wong, known simply as Mr. Wong, is a fictional Chinese-American detective created by Hugh Wiley (1884–1968). Mr Wong appeared in magazine stories and a series of films. In his story "No Witnesses", Wiley describes Mr. Wong as six feet tall, educated at Yale University and "with the face of a foreign devil-a Yankee". In the stories he is an agent of the United States Treasury Department and lives in San Francisco. Twelve stories were published in Colliers Magazine from 1934 to 1938. These were all collected in the volume "Murder by the Dozen" in