The Valley of Fear

The Valley of Fear
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The plot of the novel is based very loosely on the real-life activities of the Molly Maguires and, particularly, of Pinkerton agent James McParland. The novel is divided into two parts: in the first, Holmes investigates an apparent murder and discovers that the body belongs to another man; and in the second, the story of the man originally thought to have been the victim is told.