We put on our coats quickly and went out onto the moor. The moon was bright and so we could see the path across the moor. Also, we could see the signal light. It was about a mile away.
'There!' said Sir Henry. 'Selden is there. Hurry!'
I followed Sir Henry along the path across the moor. I was worried. I did not want Sir Henry to go far on the moor at night.
At that moment, we heard a strange sound. It was a deep howling sound. It came from some distance away.
'What's that?' asked Sir Henry. There was fear in his voice.
I was afraid too. 'It sounds like a dog,' I said. 'It sounds like a very large dog. Shall we turn back?'