Mr. Grimm's listless eyes narrowed slightly and he turned to Miss Thorne. She was a little white, but he saw enough in her face to satisfy him.

"I shall escort Monsieur Boisségur to his carriage, Miss Thorne," he said calmly. "These men will remain here until I return. Take the revolver. If either of them so much as wags his head—shoot! You are not—not afraid?"

"No." She smiled faintly. "I am not afraid."

Mr. Grimm and the ambassador went down the stairs, and out the front door. Mr. Grimm was just turning to reenter the house when from above came a muffled, venomous cra-as-ash!—a shot! He took the steps going up, two at a time. Miss Thorne was leaning against the wall as if dazed; the revolver lay at her feet. A door in a far corner of the room stood open; and the clatter of footsteps echoed through the house.

"One of them leaped at me and I fired," she gasped in explanation. "He struck me, but I'm—I'm not hurt."

She stooped quickly, picked up the revolver and made as if to follow the dying footsteps. Mr. Grimm stopped her.

"It doesn't matter," he said quietly. "Let them go." And after a while, earnestly: "If I had dreamed of such a—such a thing as this I should never have consented to allow you—"

"I understand," she interrupted, and for one instant her outstretched hand rested on his arm. "The ambassador?"

"Perfectly safe," responded Mr. Grimm. "Two of my men are with him."

[!-- CHAPTER 15 --]