Mrs. Perrigo here produced a much worn and crumpled illustrated newspaper and laid her hand solemnly upon it. That done, she shook her head.

"But I ain't so certain about the young man as met her," she said sorrowfully. "Him I did not notice with such attention, being, as I say, more attracted to her. All the same, he was a young man—and spoke the same foreign language as what she did. Of them facts, sure I am, sir."

"They sat near you, Mrs. Perrigo?"

"As near, sir, as I am now to that lady. And paid their pennies for their chairs in my presence; leastways, the young man paid. Always the same place it was, and always the same time—three days all within a week, and then the day when I see 'em walking at a distance."

"Can't you remember anything about the young man, Mrs. Perrigo?" asked the chief. "Come!—try to think. That is the really important thing. You must have some recollection of him, you know, some idea of what he was like."

Mrs. Perrigo took a corner of her shawl between her fingers and proceeded to fold and pleat it while she thoughtfully fixed her eyes on Blindway's unmoved countenance, as if to find inspiration there. And after a time she nodded her head as though memory had stirred within her.

"Which every time I see him," she said, with an evident quickening of interest, "he had two of them dogs with him what has turned-up noses and twisted tails."

"Pugs?" suggested the chief.

"No doubt that is their name, sir, but unbeknown to me as I never kept such an animal," answered Mrs. Perrigo. "My meaning being clear, no doubt, and there being no mistaking of 'em—their tails and noses being of that order. And had 'em always on a chain—gentlemen's dogs you could see they was, and carefully looked after with blue bows at the back of their necks, same as if they was Christians. And him, I should say, speaking from memory, a dark young man—such is my recollection."

"It comes to this," remarked the chief, looking at the three listeners with a smile. "Mrs. Perrigo says that she is certain that upon three occasions about the middle of March last she witnessed meetings at a particular spot in Kensington Gardens between a young woman answering the description and photographs of Lisette Beaurepaire and a young man of whom she cannot definitely remember anything except that she thinks he was dark, spoke a foreign language, and was in charge of two pug dogs which wore blue ribbons. That's it, isn't it, Mrs. Perrigo?"