Thurdan chuckled with surprising warmth. “Okay. Stay where you are and 111 pick you up right now.”
Ten minutes later Thurdan met him in an aircab and they set off northward for a distant part of Starhaven. Mantell had already learned through Myra that though the metal shell extended around the entire planet, only part of one continent had actually been settled. Starhaven was really one gigantic city of some twenty million people, which sprawled ever outward, expanding at the margins with each influx of new inhabitants. Beyond the city borders lay, to the south and east, farmland, and everywhere else the barren and empty land that had been there before Thurdan had reshaped the planet.
The aircab came to rest lightly on a landing stage atop a square, dark windowless building far to the northwest of the last outskirt of the settled area. Thurdan leaped easily from the aircab to the landing apron, with Mantell right behind.
“This is the guts and brain of Starhaven right here,” Thurdan said with a sort of pride.
A door opened trapwise not far from them. Thurdan beckoned and they descended into the upper level of the building, while the trap swung closed above them.
Men in neat laboratory outfits moved busily to and fro inside. They greeted Thurdan with respect. Thnrdan introduced Mantell as a newly arrived armaments technician. Hearing himself described as anything but a derelict was a pleasant experience. The tour began.
“Starhaven’s defenses operate on two principles,” Thurdan said, as he and Mantell crawled through a narrow tunnel lined with electronic approach-perceptors. “One is that you need a protective barrier. That’s why I built the metal shell. Second—and a lot more important—you need a good offense. An offensive power coupled with sturdy defense is impregnable. Starhaven has the best offensive battery in the universe—and when you measure that with our defensive screens, our energy-field, and the sheer strength of the outer shell itself, you’ll understand why the Space Patrol is so helpless against us.”
They entered a vast room walled completely about with chattering computers.
“Nothing is left to chance,” Thurdan said proudly. “Every shot that’s fired by one of our heavy-cycle guns is computed precisely before we release it. And we don’t miss often.”
Mantell was dazzled by the display. His eyes could hardly take in the full magnitude of the fortress Ben Thurdan had built.
A bright array of meters and dials met his eye on a higher level, and he pointed questioningly to them.
“Those are the energy flow controls,” Thurdan said. “You ought to see what happens when we’re under bombardment. Every watt of energy that’s thrown at us is soaked up by our screens, fed through the power lines here, and converted neatly into energy that we can use for operating Starhaven.”
“How often do these bombardments happen?”
“We haven’t had a big one in years. The SP has gotten smart. For a long time we hardly needed to use our own generators at all, thanks to the free power the SP kept throwing at us. But they’ve wised up, and these days they only make token raids to let us know they haven’t forgotten about us.”
Mantell nodded. He was definitely impressed; his days as an armaments man were not that far behind him that he could not appreciate the splendor of the Star-haven defenses. It was awesome.
He said, “Tell me, Ben—what genius designed all this?”
“Genius is right,” Thurdan said. “Lome Faber built this for me. It took him three years to complete the designs, three years of day-and-night work. Ever hear of him?”
“Lome Faber? I think I remember. . . . Ah, yes. Killed his wife, didn’t he? I read about the case. Long time ago.”
Thurdan nodded. “He was a brilliant electronics man. Too brilliant; nervous, jittery, brittle. I saw it coming. His brilliance killed him, eventually. I could tell he was half out of his mind when I first met him, years back.”
“What happened to him?”
“One day he saw the ghost of his wife in a neutrino screen downstairs and took a hatchet to it,” Thurdan said. “It took days to unscramble all the short circuits.”
The tour of the building lasted nearly three hours. Mantell was dizzy by the end of it, partly from the immensity of the armament tower and partly from the forgotten knowledge that had come welling excitingly back into his mind. He remembered busy hours spent designing defense screens years before, calculating inputs, tabulating megawattage, compiling long intricate columns of resistances and amperages as he shaped his work. Had it been seven years ago? They seemed to fade into one, then lead right into the present.
They reached the topmost floor of the building. Thur-dan led Mantell into a long room lined completely with vision screens. The room was similar in tone and in opulence of furnishings to Thurdan’s other office back in the center of the city.
“This,” Thurdan said, “is the sanctum sanctorum. The nerve center of the whole planet. From this room I can control the entire network of defensive screens, fire any gun from any of the emplacements, broadcast subradio messages to any world of the galaxy.”
His deep voice was filled with pride. It was not difficult to see the transparent personality of the man. He gloried in this room, from which he could control an entire world of his own, and defy the universe.
He threw himself heavily into a relaxing cradle and rocked gently back and forth. “Well, Mantell. . . . Now you’ve seen it. What do you think?”
“It’s incredible, Ben. Starhaven’s absolutely impregnable. There’s nothing like it in the galaxy.”
Thurdan’s face darkened. “I’m still worried,” he said slowly, “about a serious flaw in our system. It’s so serious, in fact, that so far neither I nor any of my best men have figured a way to repair it.”
Mantell stared at him, puzzled. “Flaw? Where? I’m rusty, Lord knows, but I’d swear that this is the most unassailable fortification that could possibly be built.”
A faint smile rippled across Thurdan’s mouth, but his eyes were still clouded. “Your statement’s true enough, as far as it goes. However, there is a weakness that, under certain conditions, could mean the end of Starhaven and of those who enjoy its sanctuary. This weakness is inside.”
“Inside?”
“Starhaven is vulnerable from within. If someone got control of this room, for instance, he could knock down the screens and hand us over to the Patrol on a silver platter. Of course, he’d have to kill me first. The man whom you saw executed in the casino the other day tried to do that.”
“Marchin, you mean?”
“Yes. He was one of my original colonists on Star-haven. But we never got along well, Marchin and 1.1 saw the conflict between us shaping for years, and yet I held my hand and let him strike first. I was stronger, as it turned out.” He shook his big head sadly. “Well, enough of that. I’ve got a job for you, Mantell. A very special job.”
“What land of job?” Mantell asked.
Thurdan said, “According to your psychprobe charts, you were a damned good defense-screen man—once. Every indication was that you’d hit the top before you were through. You fouled up that chance, but unless either Harmon or his machine is way off the beam, you still have plenty of stuff in you. Johnny, you can have a second chance to be top dog in your job, and do me a big favor at the same time. Here we can fight together. For I’ve found out—never mind how—that there’s a scheme under way to assassinate me.”
“Assassinate—you?” Mantell gasped, incredulous. “B-But what-? Who could-?”
“Never mind the details, or who wants me murdered. That’s for me to worry about, not you. But the fact remains that they have a chance to succeed before I can identify and stop them.”