"What do you mean?" Duncombe exclaimed.

Spencer stood squarely upon his feet. He looked a little tired.

"My engagement from you was to find Miss Phyllis Poynton," he said softly. "You and I are perfectly well aware that the young lady in question is—well, a few yards behind that curtain," he said, motioning with his head towards it. "My task is accomplished, and I consider myself a free man."

Duncombe was silent for a moment. He walked restlessly to the window and back again.

"How did you find out that she was here?" he asked.

Spencer looked a little disgusted.

"My dear fellow," he said, "any one with the brains of a mouse must have discovered that. Why, Lord Runton, without any of the intimations which I have received, is a little suspicious. That is merely a matter of A B C. There were difficulties, I admit, and I am sorry to say that I have never solved them. I cannot tell you at this moment how it comes about that a young lady, brought up in the country here, and from all I can learn an ordinary, unambitious, virtuous sort of young person, should disappear from England in search of a missing brother, and return in a few months the companion of one of the most dangerous and brilliant members of the French secret service. This sort of thing is clean beyond me, I admit. I will be frank with you, Duncombe. I have met with difficulties in this case which I have never met with before—peculiar difficulties."

"Go on!" Duncombe exclaimed eagerly.

"I have many sources of information in Paris," Spencer continued slowly. "I have acquaintances amongst waiters, cabmen, café-proprietors, detectives, and many such people. I have always found them most useful. I went amongst them, making careful inquiries about Phyllis Poynton and her brother. They were like men struck dumb. Their mouths were closed like rat-traps. The mention of either the boy or the girl seemed to change them as though like magic from pleasant, talkative men and women, very eager to make the best of their little bit of information, into surly idiots, incapable of understanding or answering the slightest question. It was the most extraordinary experience I have ever come across."

Duncombe was breathlessly interested.