The two men came on in close, evidently absorbed conversation, passed Mr. Pawle and Viner without as much as a glance at them, and went along in the direction of Park Lane.

"Well?" demanded Mr. Pawle.

"The clean-shaven man is the man I told you of—the man who was in conversation with Ashton at that tavern in Notting Hill the night Ashton was murdered," answered Viner. "The other man I don't know."

Mr. Pawle turned and looked after the retreating figures.

"You're sure of that?" he asked.

"Certain!" replied Viner. "I should know him anywhere."

Mr. Pawle came to another halt, glancing first at the two men, now well up the street, and then at the somewhat sombre front of Ellingham House.

"Now, this is an extraordinary thing, Viner!" he exclaimed. "There's the man who, you say, was with Ashton not very long before he came to his end, and we find him coming away—presumably—from Lord Ellingham, certainly from Lord Ellingham's house! What on earth does it mean? And I wonder who the man is?"

"What I'd like to know," said Viner, "is—who is the other man? But as you say, it is certainly a very curious thing that we should find the first man evidently in touch with Lord Ellingham—considering our recent discoveries. But—what are you going to do?"

"Going in here," affirmed Mr. Pawle, "to the fountain-head. We may get to know something. Have you a card?"