THE VALLEY OF FEAR

Sir Arthur Ignatius Conan Doyle was a Scottish writer and physician, most noted for his fictional stories about the detective Sherlock Holmes, which are generally considered milestones in the field of crime fiction.
The Valley of Fear is the fourth and final Sherlock Holmes novel by Sir Arthur Conan Doyle. It is loosely based on the Molly Maguires and Pinkerton agent James McParland. Crisp, realistic characterizations and a cracklingly suspenseful narrative make this novel a must-read for all lovers of mystery and detection as well as Sherlock Holmes fans.