Scanlon told of his experiences of the previous night, and the criminologist listened with the keenest interest.

"So," said he, at length, "our friend, Big Slim, proves to be a person of some parts. I must meet him. And the Swiss!" Here Ashton-Kirk uttered a little clicking sound, expressive of great admiration. "If criminal he be, he is of the superlative sort. As you have just remarked, when that kind are crooked, their angles are of the deadliest. It will be my good fortune, perhaps, when meeting the burglar, to encounter this gentleman also."

"But Nora," questioned Bat, coming to the point which was of most interest to him, "what of her? What about her being in that place?"

Ashton-Kirk bent his brows, and one well kept hand smoothed the shaven chin.

"You say," and there was an inquiring glint in his eyes, "she was rather on friendly terms with the burglar."

"Why," replied Bat, reluctantly, "I wouldn't say friendly, exactly. She was laughing and did seem very much at her ease while she talked to him, I'll admit that. But what of the other things? What of the creeping across the room with the gun in her hand—of her listening at the wall? And what of the look of fear I saw on her face when that fellow opened the door for her to go out?"

Ashton-Kirk nodded.

"Of course," said he. "We must not overlook anything." Glancing at his watch, and apparently dismissing this particular point from his mind, he added: "It's now two-thirty, and I want to run around to the Polo Club. Will you come along?"

Mr. Scanlon was willing, and so they made their way from the rathskeller into the sunlight. The Polo Club occupied a magnificent modern building in a prominent location. They passed in at a door which was opened by a man in uniform, ostentatious in its soberness; at the end of a room, rich in rugs and paintings, they encountered another man, stout and impassive.

"Is Mr. Dennison here, do you know, Hocking?" asked Ashton-Kirk.