The Adventure of the Engineer's Thumb

by Arthur Conan Doyle 

 

The short story "The Adventure of the Engineer's Thumb"(1891) by Arthur Conan Doyle, tells the story of a hydraulic engineer whose life was threatened while attending to a man's press said to be used to crush bricks. When the engineer discovers the truth, he runs for his life, is introduced to Dr. Watson, and assisted by Holmes who solves the case.