Colonel Walther Mannheim unlocked the door of his small suite of rooms in the Officers' Barracks. God! he was tired. It wasn't so much physical exhaustion as mental and emotional release from the tension he had been under for the preceding few hours. Or had it been years?
He dropped his heavy briefcase on a nearby chair, took off his cap and dropped it on the briefcase.
He stood there for a moment, looking tiredly around. Everything was in order, as usual. He seldom came to Government City any more. Twenty or so visits in the last ten years, and only a dozen of them had been long enough to force him to spend the night in his old suite at the World Police Headquarters at the southern end of the island. He didn't like to stay in Government City; it made him uneasy, being this close to the Nipe's underground nest. The Nipe had too many taps into government communication channels, too many ways of seeing and hearing what went on here in the nerve center of civilization.
One of the most difficult parts of this whole operation had been the careful balancing of information flow through those channels that the Nipe had tapped. To stop using them would betray immediately to that alien mind that his taps had been detected. The information flow must go on as usual. There was no way to censor the information, either, although it was known that the Nipe relied on them for planning his raids. But since there was no way of knowing, even after years of observation, what sort of thing the Nipe would be wanting next, there was no way of knowing which information should be removed from the tapped channels.
And, most certainly, removing all information about every possible material that the Nipe might want would make him even more suspicious than simply shutting down the channels altogether. To shut them down would only indicate that the human government had detected his taps; to censor them heavily would indicate that a trap was being laid.
It was even impossible to censor out news about the Nipe. That, too, would have invited suspicion. So a special corps of men had been set up, a group whose sole job was to investigate every raid of the Nipe. Every raid produced a flurry of activity by this special group. They rushed out to look over the scene of the raid, prowled around, and did everything that might be expected of an investigative body. Their reports were sent in over the usual channels. All the actual data they came up with was sent straight through the normal channels—but the conclusions they reached from that data were not. Always, in spite of everything, the messages indicated that the police were as baffled as before.
All other information relating to the Nipe went through special channels known to be untapped by the Nipe.
And yet, there was no way to be absolutely certain of the sum total of the information that the Nipe received. Believing, as he did, in the existence of Real People, he would necessarily assume that their communication systems were hidden from him, and the more difficult they were to find, the more certain he would be that they existed. And it was impossible to know what information the Nipe picked up when he was out on a raid, away from the spying devices that had been hidden in his tunnels.
Mannheim walked across the small living room to the sideboard that stood against one wall and opened a door. Fresh ice, soda, and a bottle of Scotch were waiting for him. He took one of the ten-ounce glasses, dropped in three of the hard-frozen cubes of ice, added a precisely measured ounce and a half of Scotch, and filled the glass to within an inch of the brim with soda. Holding the glass in one hand, he walked around the little apartment, checking everything with a sort of automatic abstractedness. The air conditioner was pouring sweet, cool, fresh air into the room; the windows—heavy, thick slabs of paraglass welded directly into the wall—admitted the light from the courtyard outside, but admitted nothing else. There was no need for them to open, because of the air conditioning. A century before, some buildings still had fire escapes running down their outsides, but modern fireproofing had rendered such anachronisms unnecessary.
But his mind was only partly on his surroundings. He went into the bedroom, sat down on the edge of the bed, took a long drink from the cold glass in his hand, and then put it on the nightstand. Absently he began pulling off his boots. His thoughts were on the Executive Session he had attended that afternoon.