The hound of the Baskervilles

The Hound of the Baskervilles is the third of the four crime novels written by Sir Arthur Conan Doyle featuring the detective Sherlock Holmes. It is set largely on Dartmoor in Devon in England's West Country and tells the story of an attempted murder inspired by the legend of a fearsome, diabolical hound of supernatural origin.
Could the sudden death of Sir Charles Baskerville have been caused by the gigantic ghostly hound that is said to have haunted his family for generations? Arch-rationalist Sherlock Holmes characteristically dismisses the theory as nonsense. And, immersed in another case, he sends Dr Watson to Devon to protect the Baskerville heir and observe the suspects at close hand. With its atmospheric setting on the ancient, wild moorland and its savage apparition, The Hound of the Baskervilles is one of the greatest crime novels ever written. Rationalism is pitted against the supernatural and good against evil as Sherlock Holmes sets out to defeat a foe almost his equal.