“At night, then? For the exercise? I, with all respect, Fraulein!”

Harmony was touched.

“Sometime,” she consented. And then impulsively: “I am very lonely, Herr Georgiev.”

She held out her hand, and the little Bulgarian bent over it and kissed it reverently. The Herr Georgiev's father was a nobleman in his own country, and all the little spy's training had been to make of a girl in Harmony's situation lawful prey. But in the spy's glowing heart there was nothing for Harmony to fear. She knew it. He stood, hat in hand, while she went up the staircase. Then:—

“Fraulein!” anxiously.

“Yes?”

“Was there below at the entrance a tall man in a green velours hat?”

“I saw no one there.”

“I thank you, Fraulein.”

He watched her slender figure ascend, lose itself in the shadows, listened until she reached the upper floors. Then with a sigh he clapped his hat on his head and made his cautious way down to the street. There was no man in a green velours hat below, but the little spy had an uneasy feeling that eyes watched him, nevertheless. Life was growing complicated for the Herr Georgiev.