"The Valley of Fear" by Arthur Conan Doyle. Smith, Elder & co, London. 1915 first UK edition first printing - 306p+ads. Condition: good, minor rubbing to boards, frontispiece page loose but present, bookplate to verso, some page edges wear. Good copy. 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. The story was first published in the Strand Magazine between September 1914 and May 1915. The first book edition was copyrighted in 1914, and it was first published by George H. Doran Company in New York on 27 February 1915, and illustrated by Arthur I. Keller.