Dr. Mortime sat down . Sherlock Holmes and i listened to his story 'i am a doctor and t work in the country ' said Dr. Mortime . I live and work on Dartmoor . And , as you know , Dartmoor is a large , wild place. There's only one big house was sir Charles Baskerville . I was his friends as well as his doctor. ' I read of his death in the time newspaper' said Holmes