But how long have you been here I asked. And why are you here in secret l came here on the same day as you answered Sherlock Holmes. I came in secret because the murderer is clever He will not show himself if he knows I am here.' And what about my letters" I asked have you read them. "Yes, I have Holmes replied"They were sent to me from London. But have not read your report of last night. Come, Tell me about it as we walk to Baskerville Hall He left the farmhouse and I walked quickly after him The sun had gone down and it was getting dark. A thick white mist was rising from the moor. You are a good detective," said Holmes. Tell me, how did you find me? How did you know I was at High Tor Farm