"At what time will you be disengaged this evening?"

I use the word "abruptly" to denote the suddenness and precision with which the question was put, for her manner was too refined and self-possessed to be characterized as abrupt in the usual sense of that word.

"We leave business at a little after eight," I replied.

"Then you could be at York Place, Baker Street, at nine—or say half-past nine?" she said.

"Yes, madam," I answered, "I could easily be there by half-past nine."

"Then would you call at No. 41 York Place at half-past nine to-night?"

"Certainly, madam."

"Now one word," she said. "Ask for Miss Grey when the door is opened. But do not tell any one about this interview. You will see to-night why you ought not to do so in your own interest. In the meantime keep your own counsel. You will promise me that?"

"Certainly, madam."