Dr Mortimer sat down. Sherlock Holmes and I listened to his story. 'I am a doctor and I work in the country,' said Dr Mortimer. 'I live and work on Dartmoor. And, as you know, Dartmoor is a large, wild place. There is only one big house on Dartmoor - Baskerville Hall. The owner of the house was Sir Charles Baskerville. I was his friend as well as his doctor.' 'I read of his death in The Times newspaper,' said Holmes.