The Incredulity of Father Brown
never walked on the ground like an ordinary mortal. But he looked at me very hard while he said that; and something told me that he was at that moment trying a very big bluff."
Dr. Boyne looked thoughtful. "Had you discovered the truth by then?" he asked. "There is something very queer and close to the nerves, I think, about notions affecting identity. I don't know whether it would be more weird to get a guess like that swiftly or slowly. I wonder when you suspected and when you were sure."
"I think I really suspected when I telephoned to you," replied his friend. "And it was nothing more than the red light from the closed door brightening and darkening on the carpet. It looked like a splash of blood that grew vivid as it cried for vengeance. Why should it change like that? I knew the sun had not come out; it could only be because the second door behind it had been opened and shut on the garden. But if he had gone out and seen his enemy then, he would have raised the alarm then; and it was some time afterwards that the fracas occurred. I began to feel he had gone out to do something . . . to prepare something . . . but as to when I was certain, that is a different matter. I knew that right at the end he was trying to hypnotize me, to master me by the black art of eyes like talismans and a voice like an incantation. That's what he used to do with old Aylmer, no
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