The Adventure of the Engineer’s Thumb, is the ninth of the twelve stories collected in The Adventures of Sherlock Holmes. A young London engineer, contracted to service a hydraulic press at a country house, discovers that the owner is using the machine for illegal purposes. After confronting the owner, the engineer narrowly escapes death and loses a thumb when the owner turns on him. Holmes deduces the actual use of the machine and sets off to bring the evildoers to justice.
Circa l’autore
Sir Arthur Conan Doyle (1859-1930) was a British writer best known for his creation of the legendary detective Sherlock Holmes. In addition to being considered a father of detective fiction, he also wrote a series of science-fiction adventures starring the brilliant, daring, and comical Professor Challenger.