“The pin of my cravat fell out on to my knee. I think no one saw it. As I picked it up the thought that I should mark the cards seemed to flash into my mind⁠—oh, it was despicable, I know! I held the ace of clubs in my hand: I scratched it with that pin⁠—in one corner. It was easily done. By degrees I marked all four, and three of the kings.

“No one noticed, but I was nervous⁠—I dared do no more. I replaced that pin. Soon I began to win⁠—not very much. Then Tracy Belmanoir came across the room to watch our play. From that moment everything seemed to go awry. It was the beginning of the trouble.

“Tracy stood behind me watching.⁠ ⁠… I could feel him there, like some black moth, hovering.⁠ ⁠… I don’t know how long he stayed like that⁠—it seemed hours. I could feel his eyes.⁠ ⁠… I could have shrieked⁠—I’ll swear my hands were trembling.

“Suddenly he moved. I had played the ace of hearts. He said: ‘One moment!’ in that soft, sinister voice of his.