He sat, shaking, at the typer. This was it. He decided to try his hand at shutting it down. He typed:
The computer never hesitated.
CITY DEFENSES CANNOT BE CANCELED WITHOUT JUSTIFICATION AND INPUT REGARDING ALIEN THREAT OR CONTAMINATION.
Derec typed:
OVERRIDE ALL PREVIOUS INSTRUCTIONS AND CANCEL REPLICATION.
The computer answered:
OVERRIDE IMPOSSIBLE UNDER ALL CIRCUMSTANCES. CITY DEFENSES CANNOT BE CANCELED WITHOUT JUSTIFICATION AND INPUT REGARDING ALIEN THREAT OR CONTAMINATION.
It was a lock-out. The computer refused even to talk to him about it unless he could determine the reason for the defensive measures and provide proper rationalization for termination. It seemed etched in granite. He typed:
LIST REASONS FOR CITY DEFENSE ACTIVATION.
The computer answered with a graph of the city, its shape ever changing, turning slowly. A tiny light was flashing in the section marked Quadrant #4. At the bottom of the screen the computer wrote:
Derec asked:
The computer answered:
He sat back and looked at the machine. It was very possible that the flashing light could represent the body of his look-alike. The machine wasn’t going to let him off the hook on the murder. He was beginning to see why it was so easy for him to get into the central core from this terminal, and he received his final confirmation quickly, when he typed:
LIST PROCEDURE FOR DEACTIVATION OF CITY DEFENSES.
The machine replied:
DEACTIVATION PROCEDURE:
PROVIDE PROOF OF NEUTRALIZATION THRU PROCEDURE C-15
Derec typed:
And was answered:
PROCEDURE C-15:
Derec just stared at the screen, frustrated and amazed at what he was looking at. Nothing of consequence could be done from this terminal, or from any city terminal, for that matter. Input had to come directly at the central core, and unless he misunderstood the word “mobilate,” the central core was not stationary. It was mobile, moving. And to round out the entire business philosophically, a supervisor robot was necessary to enter the defensive program.
It was actually the perfect defense. The act of shutting down the defenses had to be deliberate and calculated and agreed to by both human and robot supervision. Again, the system was set up synnoetically, and Derec, despite his disappointment, had to admire it. Ultimately, he really didn’t know the form of the contamination. The central core was behaving properly by not granting his requests for deactivation until all the facts were in. The problem, of course, was that city could kill itself before the facts came to light.
He was back where he started, with the murder of his twin. There was still much he could learn from the office and the open terminal, but he simply didn’t have the time right now. He reluctantly decided that he’d have to close out for now and return when there was more time.
He had reached out to return the terminal to its berth in the drawer when he thought of something. If the overseer were, indeed, keeping track of them, perhaps there was a file extant with that information. Not knowing his own name, he decided to go with another. Bringing the filename menu back on the screen, he typed in the words:
The machine answered:
BURGESS, KATHERINE, see DAVID.
His mouth was dry, his heart pounding as he typed in the name of the dead man.
The machine answered quickly, in a notation file obviously set in the overseer’s own hand:
ASSIMILATION TEST ON DAVID #2 PROCEEDED ON LINE AND WITHOUT MISHAP UNTIL THE TRIGGERING OF THE CITY DEFENSIVE SYSTEM AND THE DEATH OF SUBJECT THROUGH UNKNOWN MEANS.
WITHOUT HUMAN INTERVENTION, ROBOTS ARE UNABLE TO PREVENT VITAL DAMAGE THROUGH OVER-SUCCESS OF CITY PLANNING AND OPERATION WOULD BE TOTAL FAILURE.
DAVID #1 ARRIVED TO INTERVENE IN CITY CATASTROPHE AND PROCEED WITH ORIGINAL OPERATIONAL TESTING OF SYNNOETIC THEORIES. RESULTS YET TO BE SEEN.
UNCONTROLLED FACTOR ARRIVED WITH DAVID #1 IN THE FORM OF A WOMAN. SHE IS NOW CALLING HERSELF KATHERINE BURGESS FOR REASONS UNKNOWN. HER ULTIMATE INFLUENCE OVER OPERATION AND THE EXACT NATURE OF HER AIMS HAVE YET TO BE DETERMINED.
SHE WILL BE WATCHED CAREFULLY.
That was it, the end of the file. Derec stared at the flashing cursor for a moment, his mind whirling with a dozen different thoughts. But one thought overrode everything else, one sentence burned its way into his brain and hurt him more deeply than he thought possible-SHE IS NOW CALLING HERSELF KATHERINE BURGESS FOR REASONS UNKNOWN.
Chapter 10. The Sealed Room
Derec had hoped that when he came out of the overseer’s office Katherine would have already been gone, but she wasn’t. She stood waiting for him with the two witness robots, a smile on her face as if seeing him somehow made her happy. What an actress. He had to wonder now, once again, what it was she wanted out of all this. He’d once again have to pull in and play it by ear where she was concerned. Perhaps she’d say something to give herself away. Meanwhile, she’d get no satisfaction.
“How did it go?” she asked cheerily, but then her face changed, tightened up when she noticed his mood swing. “What’s wrong?”
“Nothing… Katherine,” he said, her phony name sticking in his throat. “I found an exit to the top platform, and a computer, but nothing in it helped any, except to tell me what we already knew-that we’d have to solve the murder.”
“Well then, I think we should stop wasting time and get on to that,” she said suspiciously, not quite believing his change of attitude. “Are you sure you’re okay?”
“Never better,” he lied, angry at himself for wanting to be close to her despite what he’d learned. If he had any sense, he’d turn and run as fast and as far as he could from her. Instead, he said, “Let’s go.”
They moved out of the Compass Tower quickly and quietly, Katherine watching Derec out of the corner of her eye most of the time. He tried to be more nonchalant to keep from arousing her suspicions, but it was difficult for him. He apparently wasn’t as schooled in subterfuge as she. As they made their way through the building, robots paid them no attention, already becoming familiar and comfortable with human presence.
When they stepped outside, they found a tram with a utility driver atop it, waving to them. “Friend Derec!” the robot called, and they moved over to the tram.
“What is it?” Derec asked the squat driver.
“Supervisor Euler asked me to be your driver today, honoring an earlier request you made in regard to transportation.”
“Well,” Derec said, looking at Katherine, “it appears that we’re finally being trusted a little bit. Our own tram, eh?”
“It’s radio-controlled,” the utility robot said.
Derec narrowed his brows. “What’s its range?”
“The range of the control is roughly equivalent to the limits of the already extruded city.”