This tour lets you explore the locations that inspired a well-known Sherlock Holmes novel

Dartmoor Prison was built in 1806 for French prisoners of war. Today, its grim granite edifices still confine almost 700 inmates. — Photos: CHRISTOPH DRIESSEN/dpa

Dartmoor. The word is the epitome of eerie, evoking mist swirling over thick gorse, forbidding prison walls and the most famous Sherlock Holmes story of all: The Hound Of The Baskervilles.

In the novel, the London detective and his sidekick Dr Watson must solve a mysterious death: Charles Baskerville was found with an expression of utter horror on his face – with the paw prints of a gigantic hound close by.