“I can’t,” he answered reluctantly. “I am pledged upon honor not to speak of it.”

Her blue eyes opened wide in mingled astonishment and concern.

“If there is so much secrecy,” she said slowly, “it must be a matter of importance. Is there any danger to—to—you?”

“I could hardly say there is,” he answered lightly. “Call it an interesting little adventure—nothing more serious than that.”

But she was not lightly to be put aside.

“On your honor, is there no danger?”

“None that I know of,” he answered reassuringly.

“That you know of?” she repeated. “Then you can’t tell.”

“No,” he admitted, “the circumstances are so novel—so unusual—I can’t tell.”

They had reached a secluded part of the great conservatory and stood facing each other, she with downcast eyes, he looking down upon her with rapt admiration.