He began to hit it violently. "Did you see that, see Watson? Did you it?" he asked me. But I couldn't see anything. When Holmes lit the match, I had heard a low whistle. But I could not see what Holmes had hit. I could, however, see that his face was deadly pale and filled with horror. We stood very still and a short time later, we heard a terrible scream. The sound made my blood run cold. They say that people heard the cry all the way down in the village, I still have nightmares thinking about it. "What was that scream?" I asked.