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.
Harry Devlin (fictional detective) Harry Devlin (fictional detective) Harry Devlin is a fictional detective created by the British crime writer Martin Edwards. He has appeared in eight novels and eight short stories, and was described by Marcel Berlins in ‘The Guardian’ as ‘a charming but down-at-heel Liverpool solicitor with bruised emotions, a nice line in self-deprecation, and a penchant for Mersey low life.’ The series has received consistently good reviews. In "All the Lonely People", the book which introduced Harry Devlin, his estranged wife Liz is murdered, and he is the prime suspect. Harry needs to clear his name and find who killed the