“Then why did he not betray me too?” I asked, incredulously.

“You gave him money, I suppose?”

I told Ivan Sergeievitch the whole story; how I had met Zorinsky, his offer to release Melnikoff, the sixty thousand roubles and other payments “for odd expenses” amounting to about a hundred thousand in all. I also told him of the valuable and accurate information Zorinsky had provided me with.

“That is just what he would do,” said Ivan Sergeievitch. “He worked for both sides. A hundred thousand, I suppose, is all he thought he could get out of you, so now he has gone to Finland. Something must have happened to you here, for he wanted to prevent your returning to Russia and pose as your saviour. Is it not true that something has happened?”

I told him of the discovery of the Journalist’s flat and “No. 5,” but, unless I had been tracked unnoticed, there was no especial reason to believe Zorinsky could have discovered either of these. The betrayal of the name “Krylenko” was of course easily traceable to him, but whence had he known the addresses?

And then I remembered that I had never telephoned to Zorinsky from anywhere except from “No. 5” and the Journalist’s, for those were the only places where I could speak without being overheard. I suggested the coincidence to Ivan Sergeievitch.

“Aha!” he cried, obviously regarding the evidence as conclusive. “Of course he inquired for your telephone numbers directly you had spoken! But he would not betray you as long as you continued to pay him. Besides, he doubtless hoped eventually to unearth a big organization. As for your betrayal, any time would do, and the reward was always certain. It might be another hundred thousand for your haunts. And then, you see, in Finland he would warn you against returning and get some more out of you for this further great service. He was furious to find you had just left.”

From the Windows of the Winter Palace prying eyes were looking down into the garden. Two figures sitting so long on a cold day in the bushes would begin to rouse suspicion. We rose and walked out on to the quay.

Seating ourselves on one of the stone benches set in the parapet of the river, Ivan Sergeievitch told me many things that were of the greatest value. An entirely new set of associations grew out of this conversation. He also said that Varia had just been released from prison and that he was going to take her with him across the frontier that night. He had been unable to find Stepanovna, but supposed she was staying with friends. I agreed if ever I heard of her to let him know.

“Will Zorinsky come back to Russia, do you think?” I asked.