Greville Howard watched Katty take her tea, and eat the bread and butter and the cake--daintily, but with a good appetite. He watched her with the pleasant sensations that most men felt when watching Katty do anything--the feeling that she was not only very pretty, but very healthy too, and agreeable to look upon, a most satisfactory, satisfying feminine presence. After she had finished, he again touched his invisible button, and the tray was taken swiftly and noiselessly away. * * * * * "And now," he said, "I am going to tell you _my_ part of this strange story, and you will see, Mrs. Winslow, that the two parts--yours and mine--fit, and that the vengeance for which I see you crave, is in your hands. I shall further show you how to arrange so that you need not appear in the matter if Sir Angus Kinross prove kind, as I feel sure he will be--to you." Katty clasped her hands together tightly. She felt terribly moved and excited. Vengeance? What did this wonderful old man mean? "Dealers in money," began Mr. Greville Howard thoughtfully, "have to run their own international police, and that, my dear young lady, is especially true of the kind of business which built up what I think I may truly call my fame, as well as my fortune. During something like forty years I paid a large subsidy each year to the most noted firm of private detectives in the world--a firm, I must tell you, who have their headquarters in Paris. Though I no longer pay them this subsidy, for mine was a one-man business, I still sometimes have reason to employ them. They throw out their tentacles all over the world, and their chief, a most intelligent, cultivated man, is by way of being quite a good friend of mine. I always thoroughly enjoy a chat with him when I am going through Paris on my way to my villa in the South of France. It is to this man that the credit of what I am about to tell you, the credit, that is, of certain curious discoveries connected with the mystery of Mr. Godfrey Pavely's death, is due." Greville Howard waited a few moments, and then he spoke again.