From his hiding-place Field could hear all that passed. It was a satisfaction to be able to gather up such a deal of information. Richford would have to come into the net presently, and Richford was in England, which was more than Field had expected. Of course, with everybody else, he had heard of the famous diamonds that Richford had given to his wife, and supposed that before now the diamonds had been turned into money. Into funds, Richford would have had a good chance of getting away; as it was, he must still be in London. "So that fellow is still here," Field chuckled. "Did she say Edward Street? The very house that I have my eye on. We will bag all the birds. Hullo, here come some more!" Mark and Mary Sartoris drew back as the man and woman respectively called Reggie and Cora came up. They had their listeners, but they did not know it. Perhaps, if they had, they would not have made their plans quite so openly. As it was, they had laid bare the whole of their new scheme to the quickest ears in London. Field slipped from his hiding-place as Reggie and Cora closed the front door behind them. Mary gave a little scream. "There is no occasion for alarm--at least, as far as you are concerned, Miss Sartoris," Field said. "I have heard everything that those people said." "This is Inspector Field of Scotland Yard," Mark said. Mary's lips quivered, but she said nothing. Her own instincts told her what Field was doing here. She had always felt that the bubble must burst some day--she had always known that her noble efforts were altogether in vain. And yet she would have gone on sacrificing herself to save Carl Sartoris from the fate that was inevitable. "Are you down here on any special business?" Mark asked. "On business connected with the disappearance of Sir Charles Darryll and other matters," Field said. "The one thing contains the other. But you need not have the smallest apprehension for the safety of Mrs. Richford and her diamonds. She is not going to lose them." "How did you know that she had those diamonds in her pocket?" Mary asked. "You forget that I have been hiding here," Field explained. "Like yourself, I heard every word that passed just now. Every moment I expect to have two of my most trusted men here. Directly those two emerge from the house and get into the road, they will be arrested. In my business I often find that when you are looking for one bird you frequently find another. Mr. Reggie and Miss Cora are old friends of mine and the Paris police. They are very clever at disguises; they work together, she as a countess, and he as a general officer. Both of them were on the stage and both would have made very good names, but the honest _role_ was too dull for them. You may rest assured that those two will be out of the way before daylight." Mary listened with mixed feelings. She felt that in a measure she was mainly responsible for what was going to happen. It looked as though it would be an eventful evening.