Timothy Zahn: Cascade Point

"Are you worried about Bradley?" I prompted. "Don't forget that, whatever Lanton has to do here, he'll have all the resources of the Swedish Psychiatric Institute available to undo it."

"I know. But... he's going to come out of it a different person. Even Lanton has to admit that."

"Well... maybe it'll wind up being a change for the better."

It was a stupid remark, and her scornful look didn't make me feel any better about having made it. "Oh, come on. Have you ever heard of an injury that did any real good? Because that's what it's going to be—an injury."

And suddenly I understood. "You're afraid you won't like him afterwards, aren't you? At least not the way you do now?"

"Why should that be so unreasonable?" she snapped. "I'm a damn fussy person, you know—I don't like an awful lot of people. I can't afford to... to lose any of them." She turned her back on me abruptly, and I saw her shoulders shake once.

I waited a decent interval before speaking. "Look, Alana, you're not in any shape to stay up here alone. Why don't you go down to your cabin and pull yourself together, and then go and spend some time with Bradley."

"I'm all right," she mumbled. "I can take my shift."

"I know. But... at the moment I imagine Rik needs you more than I do. Go on, get below."

She resisted for a few more minutes, but eventually I bent her sense of duty far enough and she left. For a long time afterwards I just sat and stared at the stars, my thoughts whistling around my head in tight orbit. What would the effect of the new Bradley be on Alana? She'd been right—whatever happened, it wasn't likely to be an improvement. If her interest was really only in wing-mending, Lanton's work would provide her with a brand-new challenge. But I didn't think even Alana was able to fool herself like that anymore. She cared about him, for sure, and if he changed too much that feeling might well die.

And I wouldn't lose her when we landed.

I thought about it long and hard, examining it and the rest of our situation from several angles. Finally, I leaned forward and keyed the intercom. Wilkinson was off duty in his cabin; from the time it took him to answer he must have been asleep as well. "Wilkinson, you got a good look at the damage in Lanton's neural whatsis machine. How hard would it be to fix?"

"Uh... well, that's hard to say. The thing that spit goop all over the Ming-metal coil was a standard voltage regulator board—we're bound to have spares aboard. But there may be other damage, too. I'd have to run an analyzer over it to find out if anything else is dead. Whether we would have replacements is another question."

"Okay. Starting right now, you're relieved of all other duty until you've got that thing running again. Use anything you need from ship's spares—" I hesitated—"and you can even pirate from our cargo if necessary."

"Yes, sir." He was wide awake now. "I gather there's a deadline?"

"Lanton's going to be doing some ultrasound work on Bradley in fifty-eight hours. You need to be done before that. Oh, and you'll need to work in Lanton's cabin—I don't want the machine moved at all."

"Got it. If you'll clear it with Lanton, I can be up there in twenty minutes."

Lanton wasn't all that enthusiastic about letting Wilkinson set up shop in his cabin, especially when I wouldn't explain my reasons to him, but eventually he gave in. I alerted Kate Epstein that she would have to do without Wilkinson for a while, and then called Matope to confirm the projects access to took and spares.

And then, for the time being, it was all over but the waiting. I resumed my examination of the viewport, wondering if I were being smart or just pipe- dreaming.

Two days later—barely eight hours before Bradley's operation was due to begin—Wilkinson finally reported that the neural tracer was once again operational.

—

"This better be important," Lanton fumed as he took his place at the dining- room table. "I'm already behind schedule in my equipment setup as it is."

I glanced around at the others before replying. Pascal and Chileogu, fresh from their latest attempt at making sense from their assortment of plots, seemed tired and irritated by this interruption. Bradley and Alana, holding hands tightly under the table, looked more resigned than anything else. Everyone seemed a little gaunt, but that was probably my imagination—certainly we weren't on anything approaching starvation rations yet. "Actually, Doctor," I said, looking back at Lanton, "you're not in nearly the hurry you think. There's not going to be any operation."

That got everyone's full attention. "You've found another way?" Alana breathed, a hint of life touching her eyes for the first time in days.

"I think so. Dr. Chileogu, I need to know first whether a current running through Ming metal would change its effect on the ship's real rotation."

He frowned, then shrugged. "Probably. I have no idea how, though."

A good thing I'd had the gadget fixed, then. "Doesn't matter. Dr. Lanton, can you tell me approximately when in the cascade point your neural tracer burned out?"

"I can tell you exactly. It was just as the images started disappearing, right at the end."

I nodded; I'd hoped it was either the turning on or off of the field generator that had done it. That would make the logistics a whole lot easier. "Good. Then we're all set. What we're going to do, you see, is reenact that particular maneuver."

"What good will that do?" Lanton asked, his tone more puzzled than belligerent.

"It should get us home." I waved toward the outer hull. "For the past two days we've been moving toward a position where the galactic field and other parameters are almost exactly the same as we had when we went through that point— providing your neural tracer is on and we're heading back toward Taimyr. In another two days we'll turn around and get our velocity vector lined up correctly. Then, with your tracer running, we're going to fire up the generator and rotate the same amount—by gyro reading—as we did then. You"—I leveled a finger at Lanton—"will be on the bridge during that operation, and you will note the exact configuration of your cascade images at that moment. Then, without shutting off the generator, we'll rotate back to zero; zero as defined by your cascade pattern, since it may be different from gyro zero. At that time, I'll take the Ming metal from your tracer, walk it to the number one hold, and stuff it into the cargo shield; and we'll rotate the ship again until we reach your memorized cascade pattern. Since the physical and real rotations are identical in that configuration, that'll give us the real angle we rotated through the last time—"

"And from that we can figure the angle we'll need to make going the other direction!" Alana all but shouted.

I nodded. "Once we've rotated back to zero to regain our starting point, of course." I looked around at them again. Lanton and Bradley still seemed confused, though the latter was starting to catch Alana's enthusiasm. Chileogu was scribbling on a notepad, and Pascal just sat there with his mouth slightly open. Probably astonished that he hadn't come up with such a crazy idea himself. "That's all I have to say," I told them. "If you have any comments later—"

"I have one now, Captain."

I looked at Bradley in some surprise. "Yes?"

He swallowed visibly. "It seems to me, sir, that what you're going to need is a set of cascade images that vary a lot, so that the pattern you're looking for is a distinctive one. I don't think Dr. Lanton's are suitable for that."

"I see." Of course; while Lanton had been studying Bradley's images, Bradley couldn't help but see his, as well. "Lanton? How about it?"

The psychiatrist shrugged. "I admit they're a little bland—I haven't had a very exciting life. But they'll do."