board and striking a match. "Even if the facts are scanty, no doubt you have fairly substantial grounds for such a suspicion?"
"I cannot say that they are substantial, Mr. Harley. They are rather more circumstantial. Frankly, I have forced myself to come here, and now that I have intruded upon your privacy, I realize my difficulties more keenly than ever."
The expression of embarrassment upon the speaker's face had grown intense; and now he paused, bending forward in his chair. He seemed in his glance to appeal for patience on the part of his hearer, and Harley, lighting his pipe, nodded in understanding fashion. He was the last man in the world to jump to conclusions. He had learned by bitter experience that lightly to dismiss such cases as this of Sir Charles as coming within the province of delusion, was sometimes tantamount to refusing aid to a man in deadly peril.
"You are naturally anxious for the particulars," Sir Charles presently resumed. "They bear, I regret to say, a close resemblance to the symptoms of a well-known form of hallucination. In short, with one exception, they may practically all be classed under the head of surveillance."
"Surveillance," said Paul Harley. "You mean that you are more or less constantly followed?"
"I do."
"And what is your impression of this follower?"
