The Valley of Fear 

Only Holmes and Watson can get to the bottom of this baffling murder mystery. John Douglas is found in his study blasted faceless with a sawn-off shotgun. There is no obvious motive or suspect. Douglas and his wife, Ivy, a rich and locally popular couple, have lived for years in the ancient, moated Birlstone Manor House. Despite Douglas' nightly ritual of raising the drawbridge, a perpetrator had concealed himself, shot Douglas, and made a clean getaway.

Sir Arthur Conan Doyle was both a doctor and a believer in spirits, which may partly explain why his Sherlock Holmes is one of literature's most beloved detectives: Holmes always approaches his cases with the gentility and logic of a scientist, but the stories are suffused with an aura of the supernatural. Narrated by devoted assistant Dr. John H. Watson, Holmes's adventures were so addictive that fans protested the master deducer's "death" in 1893 and Doyle had to resurrect him.