The sun had gone down and it was getting dark. A thick whit 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?'
'I did not know it was you,' I answered. 'Mr Frankland saw you through his telescope. And he saw the boy who brought you food and letters. He thought you were Selden, the murderer. Also, I saw you last night on the Tor.'
'I see,' said Holmes. 'if you saw me , I think he murderer of Sir Charles Baskerville saw me too.
He will want to kill me as well Sir Henry.'
'So,' I said, 'you think that Sir Charles was murderer?'
'I am sure of it,' said Holmes. 'Now, stay on the path.'
It was dark and the moon had not come up. We had to walk carefully. The path want through the Great Grimpen Mire and a sea of soft mud lay under the grass on either side of us.
Behind us , we heard that strange sound, the deep howling sound I had heard on the moor last night. It made me shiver with fear.
'What is it, Holmes?' I asked. ' Do you know what makes that sound.'
'No,' he answered, 'but the village people say it is the Hound of the Baskervilles. I will not go back to High Tor farm tonight. Come. We must hurry. Keep your revolver ready.'
We walked quickly along the dark path. I was pleased to see the lights of Baskerville Hall in front of us. I was afraid of what was behind us-out on the moor, at night.