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. The novel starts with Sherlock Holmes receiving a cipher message from Fred Porlock, a pseudonymous agent of Professor Moriarty. After Porlock sends the message, however, he changes his mind for fear of Moriarty's discovering that he is a traitor. He decides not to send the key to the cipher, but he sends Holmes a note telling of this decision.
Sherlock Holmes Chronicles, Folge 24: Die Teufelskralle
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Sherlock Holmes Chronicles, Folge 99: Der erbleichte Soldat
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Sherlock Holmes Chronicles, Folge 88: Wisteria Lodge
Sir Arthur, Markus Winter
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Sherlock Holmes : Geliebte Alba - Neues aus der Baker Street, Folge 17 (Ungekürzt)
Sir Arthur, Augusta Hawthorne
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Der adlige Junggeselle - Viola Gabor liest Sherlock Holmes, Folge 10 (Ungekürzt)
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Mord im Tivoli - Sherlock is Back, Folge 4 (Ungekürzt)
Sir Arthur, Beatrice Ferolli
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Sherlock Holmes Chronicles, Folge 111: Das Rätsel von Boscombe Valley
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Sherlock Holmes Chronicles, Folge 108: Der verkrüppelte Mann
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Mord im Atelier - Sherlock is Back, Folge 3 (Ungekürzt)
Sir Arthur, Beatrice Ferolli
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Sherlock Holmes Chronicles, Folge 106: Die Bruce Partington Pläne
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Mord an Bord - Sherlock is Back, Folge 2 (Ungekürzt)
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Sherlock Holmes Chronicles, Folge 104: Der Mann mit der Narbe
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