The Valley of Fear is the fourth and final Sherlock Holmes novel by Sir Arthur Conan Doyle. It is based on the supposedly real-life exploits of the Molly Maguires and Pinkerton agent James McParland. The story was first published in the Strand Magazine between September 1914 and May 1915. The first book edition was copyrighted in 1914, published by George H. Doran Company in New York on 27 February 1915, and illustrated by Arthur I. Keller.
Adaptations
Among the few film adaptations are the 1916 silent film The Valley of Fear starring H.A. Saintsbury and Booth Conway, the 1935...