“I—I mean that Mrs Laing could not possibly have done anything to offend our Government,” he said, quickly correcting himself. “It is certainly very strange. Renouf is not a man to be trifled with,” he added quickly. “There must be some very strong reason, known only to himself, that has induced him to act in this manner. If the motive were not a strong one, he would delegate the menial position he has had to assume to one of his subordinates. I know he has his hands full of important inquiries just now, and it therefore surprises me that he is calmly reposing as butler in Mrs Laing’s service.”

“But knowing him to be a spy, I cannot allow him to remain longer in daily contact with those two defenceless women,” I exclaimed.

“Have they ever been in Russia?”

“Never!” I replied. “Only the other evening they were asking me about St Petersburg, and both expressed a wish to visit your country.”

Paul, with his hands behind his back, and head bent in thought, paused for a moment, and then said,—

“From what I know of Ivan Renouf, I believe that were you to do him an evil turn, and obtain his dismissal from Pont Street, he would at once expose to the Ministry of the Interior how Sonia Korolénko obtained her passport. If he did so, the result would be disastrous to me, especially just at a time when our frontier regulations are extremely rigid.”

“What, then, is the best course to pursue?” I asked.

He was silent, looking moodily into the fire. Then turning with a sudden movement, he said, with emphasis,—“You are my friend, Geoffrey. My future is in your hands.”

“Which means that my silence is imperative,” I observed reflectively.

Paul Verblioudovitch nodded, but uttered no word. If I denounced Renouf it was plain that my friend who had seriously imperilled his position at my urgent request, must undoubtedly suffer. In order to shield him I must therefore remain silent. With intense chagrin I saw myself ingeniously checkmated.