The Adventure of the Engineer’s Thumb – AudioEbook

In his narration, Dr. Watson notes that this is one of only two cases which he personally brought to the attention of Sherlock Holmes.
The story, set in 1889, mainly consists of a young London consultant hydraulic engineer, Mr. Victor Hatherley, recounting strange happenings of the night before, first to Dr. Watson who dresses the stump where Mr. Hatherley's thumb has been cut off, and then to Sherlock Holmes himself.