"How do you know that you killed Mr.Varleigh ?" I said.
He looked at me with a wild terror in his eyes.

Suddenly he lifted his right hand, and shook it in the air, with a moaning cry, which was unmistakably a cry of pain.

"Should I see his ghost," he asked, "if I had not killed him?
I know it, by the pain that wrings me in the hand that stabbed him.

Always in my right hand! always the same pain at the moment when I see him!" He stopped and ground his teeth in the agony and reality of his delusion.

"Look!" he cried.