"Just before that," resumed the detective, "another of the men struck up a cock-and-bull story that Salter was living in Aberdeen. I forget the precise reason he had for asserting it. We instituted inquiries: but, like the later tale, they resulted in nothing. As yet, we have no sure clue to Salter."

"That is all you know!" asked Karl.

"Every word. Has the information helped you?"

"Not in the least degree."

There was nothing else for Karl to wait for. His visit had been a fruitless one. "I should have liked to see Grimley once again," he said as he rose. "Is he in town?"

"Grimley is in the house now. At least, he ought to be. He is engaged in a case under me, and was to be here at three o'clock for instructions. Will you see him?"

"If you please."

It had occurred to Karl more than once that he should like to describe Smith accurately to Grimley, and ask whether the description tallied with Salter's. He could do it without affording any clue to Smith or his locality.

Mr. Burtenshaw rang, and told the maid to send up Grimley, if he had come. In obedience to this, Grimley, in his official clothes, appeared, and another officer with him.

"Oh, I don't want you just yet, Watts," said Mr. Burtenshaw. "Wait down stairs."