"The Adventure of the Illustrious Client" (1924), one of the 56 Sherlock Holmes short stories written by British author Sir Arthur Conan Doyle, is one of 12 stories in the cycle collected as The Case Book of Sherlock Holmes.A 1965 episode of Sherlock Holmes starring Douglas Wilmer as Holmes and Nigel Stock as Watson featured an adaptation of "The Adventure of the Illustrious Client".
The Granada TV version with Jeremy Brett is faithful to the original, except that it shows that Miss Winter's revenge attempt on the Baron was because he had disfigured her neck and chest with vitriol.