Macgillivray had the sharpened face of a bitterly disappointed man. Blenkiron had got very red, and I could see that he was blaspheming violently under his breath. Mary’s eyes were quiet and solemn. She kept on patting Sir Walter’s hand. The sense of some great impending disaster hung heavily on me, and to break the spell I asked for details.
“Tell me just the extent of the damage,” I asked. “Our neat plan for deceiving the Boche has failed. That is bad. A dangerous spy has got beyond our power. That’s worse. Tell me, is there still a worst? What’s the limit of mischief he can do?”
Sir Walter had risen and joined Blenkiron on the hearthrug. His brows were furrowed and his mouth hard as if he were suffering pain.
“There is no limit,” he said. “None that I can see, except the long-suffering of God. You know the man as Ivery, and you knew him as that other whom you believed to have been shot one summer morning and decently buried. You feared the second—at least if you didn’t, I did—most mortally. You realised that we feared Ivery, and you knew enough about him to see his fiendish cleverness. Well, you have the two men combined in one man. Ivery was the best brain Macgillivray and I ever encountered, the most cunning and patient and long-sighted. Combine him with the other, the chameleon who can blend himself with his environment, and has as many personalities as there are types and traits on the earth. What kind of enemy is that to have to fight?”
“I admit it’s a steep proposition. But after all how much ill can he do? There are pretty strict limits to the activity of even the cleverest spy.”
“I agree. But this man is not a spy who buys a few wretched subordinates and steals a dozen private letters. He’s a genius who has been living as part of our English life. There’s nothing he hasn’t seen. He’s been on terms of intimacy with all kinds of politicians. We know that. He did it as Ivery. They rather liked him, for he was clever and flattered them, and they told him things. But God knows what he saw and heard in his other personalities. For all I know he may have breakfasted at Downing Street with letters of introduction from President Wilson, or visited the Grand Fleet as a distinguished neutral. Then think of the women; how they talk. We’re the leakiest society on earth, and we safeguard ourselves by keeping dangerous people out of it. We trust to our outer barrage. But anyone who has really slipped inside has a million chances. And this, remember, is one man in ten millions, a man whose brain never sleeps for a moment, who is quick to seize the slightest hint, who can piece a plan together out of a dozen bits of gossip. It’s like—it’s as if the Chief of the Intelligence Department were suddenly to desert to the enemy.... The ordinary spy knows only bits of unconnected facts. This man knows our life and our way of thinking and everything about us.”
“Well, but a treatise on English life in time of war won’t do much good to the Boche.”
Sir Walter shook his head. “Don’t you realise the explosive stuff that is lying about? Ivery knows enough to make the next German peace offensive really deadly—not the blundering thing which it has been up to now, but something which gets our weak spots on the raw. He knows enough to wreck our campaign in the field. And the awful thing is that we don’t know just what he knows or what he is aiming for. This war’s a packet of surprises. Both sides are struggling for the margin, the little fraction of advantage, and between evenly matched enemies it’s just the extra atom of foreknowledge that tells.”
“Then we’ve got to push off and get after him,” I said cheerfully.
“But what are you going to do?” asked Macgillivray. “If it were merely a question of destroying an organisation it might be managed, for an organisation presents a big front. But it’s a question of destroying this one man, and his front is a razor edge. How are you going to find him? It’s like looking for a needle in a haystack, and such a needle! A needle which can become a piece of straw or a tin-tack when it chooses!”