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.
Detective fiction developed... Where was the detective story until Poe breathed the breath of life into it?" Ellery Queen is a fictional detective-hero, created by Manfred Bennington Lee (1905-1971), and Frederic Dannay (1905～1982), as well as a joint pseudonym for the cousins Dannay and Lee. Ellery Queen first appeared in "The Roman Hat Mystery" (1929), and was the hero of more than 30 novels and several short story collections, During the 1930s and much of the 1940s, that detective-hero was possibly the best known American fictional detective. Many detectives appear in more than one novel or story. Here is a list of