"Yes."

"May I inquire upon what grounds your expectation was based?"

He smiled; and here I observed, in the quality of this smile, a characteristic of which Mrs. Lemon had given me no indication. Devlin was evidently gifted with a touch of humour.

"I reason by analogy," he said. "My landlady has very few visitors. You are here for the first time, with an object. You remain closeted with her for hours. She probably sent for you. During the long interview down-stairs you have been told a great deal about me. You hear me open the street-door, and you know I am in the house. My landlady has a trouble on her mind, and mixes me up with it. You have been made acquainted with this trouble and with my supposed connection with it. Your curiosity has been aroused, and you determine to seek an interview with me before you take your leave of her. You come up uninvited, and here you are, as I expected. Am I logical?"

"Quite logical."

"In a common-sense view of commonplace matters--and everything in the world is commonplace--lies the ripest wisdom. Follow my example. Exercise your common sense."

But I did not immediately speak. Devlin's words were so different from what I had expected that I was for a moment at a loss. The prospect of my being able to bring the murderer of Lizzie Melladew to justice and of earning a thousand pounds did not appear so bright.

"I will assist you," he resumed; "I will endeavour to set you at your ease with me. Your scrutiny of me has been very searching; I ought to feel flattered. What anticipations of my appearance you may have entertained before you entered the room is your affair, not mine. How far they are realised is your affair, not mine. But allow me to assure you, my dear sir," and here he rose to his full height, and made me a half-humorous, half-mocking bow, "that I am a very ordinary person."

"That cannot be," I said, "after what I have heard."

"It is the destiny," he said, resuming his seat, "of greater personages than myself to be ranked much higher than they deserve. Proceed."