“You — you must not!” Letty said faintly, and put up her hand to stop his against her hair.

But the string was untied, and the mask fell. Her hand was caught and held; she lay back against the Unknown’s shoulder, and felt his other hand gently forcing up her chin.

It must surely be a mad dream from which she would awaken soon. She looked up and saw only glittering eyes behind the blackness of the mask, and the hint of a smile in the moonlight. The arm tightened about her shoulders; the hand beneath her chin pressed more insistently, and the Unknown bent his head till his lips found hers.

The spell held for a moment; then she quivered, and made a fluttering movement to be free. The Unknown sank on one knee, and lifted the hem of her gown to kiss. “Forgive me!” he said. “I may never have the chance again, Letitia.”

She stood poised for flight, but his words kept her still. Half timidly she stretched down her hand to him.

“Oh, do not!” she said. “I think we are both mad tonight.”

He came to his feet, and stood holding her hands between his. “But you will remember.”

“I shall see you again?” It was a forlorn petition.

“Who can say? This I promise: if ever you are in danger, or in need of a champion you will see me, for I shall come to you then.” He stood for a moment, silhouetted by the silver light against the deep blue sky; then once more he bent, and, turning her hand upwards, pressed a kiss into the palm. “Adieu, ma belle; you will not forget.”

He moved swiftly to the low parapet that walled the terrace in; looked over an instant, and placing his hand on the top, vaulted lightly over, down into the silent garden a few feet below.