"Call it the sacred Blue Stone of Ghan and have done with it," Lefroy growled.
"Very well, though it is hardly diplomacy. Mrs. Benstein came here wearing the Blue Stone. You found it out quite by accident, and it was your game to prevent me from knowing. You tried very hard, but you were a little too much taken by surprise, especially when the Shan was announced."
"That was a very awkward moment for me," Lefroy admitted.
"It was. Directly you came in here I guessed exactly what had happened. As a matter of fact, I had not the least intention of your coming here to-night, indeed I didn't know you were coming. As a matter of fact, also, my wife cordially dislikes you, and I suppose she only asked you out of compliment to me."
"We'll let that pass," Lefroy said. "I was startled when Mrs. Benstein dropped her mask and the Blue Stone stood revealed. Of course, I knew that the stone was pledged to Benstein, and that Mrs. Benstein having it was natural enough. The doting old fool had been wheedled out of it for the evening. But I didn't know that you knew that, and I was most anxious to keep the information from you. But directly I came face to face with you here, I knew that you had some deep scheme, and that you guessed that I had got wind of it. I have worked that out."
Frobisher smoked and sipped his brandy with infinite relish.
"I always like to study a subtle mind, Count," he said. "Will you explain your meaning?"
"Certainly, especially as I shall lose nothing by so doing. Why did you get your wife to ask that woman here at all? I knew you had to use something like force to bring it about. You did it because you knew where the Blue Stone was. You advised Mrs. Benstein as to her dress, you gave her hints on that head. You were quite aware of the extent of Benstein's senile devotion to his wife. And you calculated that if she adopted the ruby suggestion she would borrow the Blue Stone."
"Excellent," Frobisher said cordially. "A capital piece of reasoning. And a very pretty scheme, though I say it myself. It came off, and only your presence prevented my coup. Pray go on."
"There isn't much more to say. Once Mrs. Benstein was here wearing the Blue Stone, you had no intention of her leaving with the gem in her possession. I don't mean to say that you would have used brutal force to get it, but I do mean to say that you would not have hesitated at that if needs must. Once you had the stone you would have forced those concessions from the Shan."