Karl, opening his business, led up to the question he had come to ask. Would Mr. Burtenshaw confide to him the reason for his supposing Philip Salter to be still in England? At first Mr. Burtenshaw said No; that it could not, he imagined, concern him or anyone else to hear it. Karl pleaded, and pleaded earnestly.
"Whatever you say shall be kept strictly sacred," he urged. "It cannot do harm to any one. I have a powerful motive for asking it."
"And a painful one, too," thought the detective. Karl was leaning forward in his chair, his pale face slightly flushed with inward emotion, his beautiful grey eyes full of eager entreaty, and a strange sadness in their depths.
"Will you impart to me, sir, your motive for wishing to know this?"
"No, I cannot," said Karl. "I wish I could, but I cannot."
"I fancy that you must know Salter's retreat, sir--or think you know it: and you want to be assured it is he before you denounce him," spoke the detective, hazarding a shrewd guess.
Karl raised his hand to enforce what he said, speaking solemnly. "Were I able to put my finger this moment upon Salter, I would not denounce him. Nothing would induce me. You may believe me when I say that, in asking for this information, I intend no harm to him."
The detective saw how true were the words. There was something in Karl Andinnian strangely attractive, and he began to waver.
"It is not of much consequence whether I give you the information or whether I withhold it," he acknowledged, giving way. "The fact is this: one of our men who knew Salter, thought he saw him some three or four months ago. He, our man, was on the Great Western line, going to Bath; in passing a station where they did not stop, he saw (or thought he saw) Salter standing there. He is a cool-judging, keen-sighted officer, and I do not myself think he could have been mistaken. We followed up the scent at once, but nothing has come of it."
Karl made no answer: he was considering. Three or four months ago? That was about the time, he fancied, that Smith took up his abode at Foxwood. Previous to that, he might have been all over England, for aught Karl could tell.