The Adventure of the Illustrious Client is a classic Sherlock Holmes short story by Arthur Conan Doyle. The ideas of my friend Watson, though limited, are exceedingly pertinacious. For a long time he has worried me to write an experience of my own. Perhaps I have rather invited this persecution, since I have often had occasion to point out to him how superficial are his own accounts and to accuse him of pandering to popular taste instead of confining himself rigidly to facts and figures.