“I don’t think Midori should hear what’s on that tape,” I said. “She knows enough. I don’t want to . . . compromise her further.”
Harry bowed his head and said, “I completely understand.”
All at once, I knew that he knew.
“It’s good that I can trust you,” I said. “Thank you.”
He shook his head. “Kochira koso,” he said. The same here.
The buzzer rang. Harry pressed the intercom button, and Midori said, “It’s me.”
Harry hit the entrance buzzer, and we took up our positions, this time with me at the door and Harry at the window. A minute later I saw Midori walking down the hallway with a rectangular cardboard box in her arms. Her face broke into a smile when she saw me, and she covered the distance quickly, stepped inside the genkan, and gave me a quick hug.
“Every time I see you, you look worse,” she told me, stepping back after a moment and setting the box on the floor. It was true: my face was still smudged with dirt from my tumble on the subway tracks, and I knew I looked exhausted.
“I feel worse, too,” I said, but smiling to let her know she made me feel good.
“What happened?”
“I’ll give you the details in a little while. First, Harry tells me you’re going to give us a piano recital.”
“That’s right,” she said, reaching down and stripping tape off the box. She popped open the end and slid out an electronic keyboard. “Will this work?” she said, holding it up to Harry.
Harry took it and examined the jack. “I think I’ve got an adapter here somewhere. Hang on.” He walked over to the desk, pulled open a drawer filled with electronic components, and tried several units before finding one that satisfied him. He set the keyboard down on the desk, plugged it into the computer, and brought the scanned image of the notes up onto the monitor.
“The problem is that I can’t play music and Midori can’t run the computer. I think the shortcut will be to get the computer to apply the patterns of sounds to the representation of notes on the page. Once it’s got enough data to work with, the computer will interpret the musical notes as coordinates in the lattice, then use fractal analysis until it can discern the most basic way the pattern repeats itself. Then it will apply the pattern to standard Japanese through a code-breaking algorithm I’ve set up, and we’ll be in.”
“Right,” I said. “That’s just what I was thinking.”
Harry gave me his trademark “you-are-a-complete-knuckle-dragger” look, then said, “Midori, try playing the score on the monitor and let’s see what the computer can do with the data.”
Midori sat down at the desk and lifted her fingers over the keyboard. “Wait,” Harry said. “You’ve got to play it perfectly. If you add or delete a note, or play one out of order, you’ll create a new pattern, and the computer will get confused. You have to play exactly what appears on the screen. Can you do that?”
“I could if this were an ordinary song. But this composition is unusual. I’ll need to run through it a few times first. Can you disconnect me from the computer?”
“Sure.” He dragged and clicked the mouse. “Go ahead. Tell me when you’re ready.”
Midori looked at the screen for a few moments, her head straight and motionless, her fingers rippling ever so slightly in the air, reflecting the sounds she could hear in her mind. Then she brought her hands down gently to the keys, and for the first time we heard the eerie melody of the information that had cost Kawamura his life.
I listened uncomfortably while Midori played. After a few minutes, she said to Harry, “Okay, I’m ready. Plug me in.”
Harry worked the mouse. “You’re in. Let it hear you.”
Again, Midori’s fingers floated over the keys, and the room was filled with the strange requiem. When she reached the end of the score, she stopped and looked at Harry, her eyebrows raised in a question.
“It’s got the data,” he said. “Let’s see what it can do with it.”
We watched the screen, waiting for the results, none of us speaking.
After a half minute or so, a strange, disembodied series of notes emanated from the computer speakers, shadows of what I had heard Midori play a moment earlier.
“It’s factoring the sounds,” Harry said. “It’s trying to find the most basic pattern.”
We waited silently for several minutes. Finally Harry said, “I don’t see any progress. I might not have the computing power here.”
“Where can you get it?” Midori asked.
Harry shrugged. “I can try hacking into Livermore to gain access to their supercomputer. Their security has been getting better, though — it could take some time.”
“Would a supercomputer do the trick?” I asked.
“It might,” he said. “Actually, any reasonable amount of processing power is enough. It’s a question of time, though — the more processing power, the more possibilities the computer can try in a shorter time.”
“So a supercomputer would speed things up,” Midori said, “but we don’t know by how much.”
He nodded. “That’s right.”
There was a moment of frustrated quiet. Then Harry said, “Let’s think for a moment. How much do we even need to decrypt this?”
I knew where he was going: the same tempting thought I had at Conviction headquarters when Yamaoto was asking for the disk.
“What do you mean?” Midori asked.
“Well, what are our objectives here? The disk is like dynamite; we just want to render it safe. The owners know that it can’t be copied or electronically transmitted. For starters, we could render it safe by just giving it back to them.”
“No!” Midori said, standing up from in front of the monitor and facing Harry. “My father risked his life for what’s on that disk. It’s going where he wanted it to go!”
Harry held up his hands in an “I-surrender” gesture. “Okay, okay, I’m just trying to think outside the box. Just trying to be helpful.”
“It’s a logical idea, Harry,” I said, “but Midori’s right. Not only because her father risked his life to acquire the disk. We know now that there are multiple parties seeking its return — not just Yamaoto, but also the Agency, the Keisatsucho. Maybe more. Even if we were to give it back to one of them, it wouldn’t solve our problems with the others.”
“I see your point,” Harry conceded.
“But I like your dynamite analogy. How do you render dynamite safe?”
“You detonate it somewhere safe,” Midori said, still looking at Harry.
“Exactly,” I said.
“Bulfinch,” Midori said. “Bulfinch publishes it, and that’s what makes it safe. And it’s what my father wanted.”
“Do we give it to him without even knowing for sure what’s on it?” Harry asked.
“We know well enough,” I said. “Based on what Bulfinch told us, corroborated by Holtzer. I don’t see an alternative.”
He frowned. “We don’t even know if he has the resources to decrypt it.”
I suppressed a smile at the slight hint of resentment I detected: someone was going to take away his toy, maybe solve the technopuzzle without him.
“We can assume that Forbes can access the right resources. We know how much they want what’s on that disk.”
“I’d still like a better chance at decrypting it first.”
“So would I. But we don’t know how long that would take. In the meantime we’ve got forces arrayed against us and we’re not going to be able to go on eluding them for much longer. The sooner Bulfinch publishes the damn thing, the sooner we can breathe easy again.”
Midori, not taking any chances, said, “I’ll call him.”
20
I HAD TOLD Bulfinch to meet me in Akasaka Mitsuke, one of the city’s entertainment districts, second only to Ginza in its profusion of hostess bars. The area is intersected by a myriad of alleyways, some so narrow they can only be traversed sideways, all of which offer multiple means of access and escape.