The Greek Interpreter: A Sherlock Holmes Short Story

" Collections of short stories by the author can be found elsewhere.

The story is #9 of eleven in "The Memoirs of Sherlock Homes. "

On a summer evening, while engaged in in an aimless conversation that comes round to the topic of hereditary attributes, Doctor Watson learns that 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 his friend's brother, Mycroft, and the Diogenes Club. Through that process, they meet a man whose job is interpreting Greek, and learn of his recent difficulties.