The Adventure of the Engineer's Thumb

The Adventure of the Engineer's Thumb is a short detective story by Arthur Conan Doyle, first published in 1892. It is one of the Sherlock Holmes stories and appears in The Adventures of Sherlock Holmes. The story centers on a case that reaches Holmes through Dr. Watson, involving an engineer who finds himself drawn into a suspicious and unusual situation that calls for careful attention to detail, trust, and observation.

It suits readers who like short mysteries, a brisk pace, and a detective who works by piecing together small facts rather than by action-heavy scenes. It is also a good entry point for anyone who wants a compact taste of the Holmes world without starting a longer novel. What stands out here is the classic Sherlock Holmes rhythm: close observation, practical reasoning, and the slow locking together of clues into a single picture.