'Yes, sir,' the driver replied. 'A prisoner has escaped from Dartmoor Prison. He's a very dangerous man. His name is Selden. He is a dangerous murderer.'
I looked across the empty moor. A cold wind blew and made me shiver. Holmes believed that someone wanted to murder Sir Henry Baskerville. Now, another murderer was out on the moor. I felt that this lonely place was very dangerous. I wanted to go back to London.