In the fourth and final Sherlock Holmes novel, Holmes and Dr. Watson must untangle Moriaty's complex scheme in order to find the villains responsible for the attempted murder of Mr. Douglas. With Douglas in hiding and the clues to solving the mystery firmly planted twenty years in the past, Holmes and Watson are faced with one of the most challenging cases of their career.

The Valley of Fear is believed to have been inspired by the real-life case of the Molly Maguires and Pinkerton agent James McParland. It has been adapted for film, television, and the stage.

HarperPerennial Classics brings great works of literature to life in digital format, upholding the highest standards in ebook production and celebrating reading in all its forms. Look for more titles in the HarperPerennial Classics collection to build your digital library.