"And now?" I asked.

"Our quest is practically finished. I shall call with the King to-morrow, and with you, if you care to come with us. We will be shown into the sitting-room to wait for the lady, but it is probable that when she comes she may find neither us nor the photograph. It might be a satisfaction to his Majesty to regain it with his own hands."

"And when will you call?"

"At eight in the morning. She will not be up, so that we shall have a clear field. Besides, we must be prompt, for this marriage may mean a complete change in her life and habits. I must wire to the King without delay."

We had reached Baker Street and had stopped at the door. He was searching his pockets for the key when someone passing said:

"Good-night, Mister Sherlock Holmes."

There were several people on the pavement at the time, but the greeting appeared to come from a slim youth in an ulster who had hurried by.

"I've heard that voice before," said Holmes, staring down the dimly lit street. "Now, I wonder who the deuce that could have been."