“You got someone here named Miyake?” Hatfield asked.

McGonnigal looked through the sheaf of notes in his hand and shook his head.

“Anyone here work for Kawamoto?”

Kawamoto is a big Japanese electronics firm, one of Mitsubishi’s peers and a strong rival of Hansen in the megacomputer market.

“Hatfield, are you trying to tell us that Folger was passing Series J secrets to someone from Kawamoto over the go boards here?”

Hatfield shifted uncomfortably. “We only got onto it three weeks ago. Folger was just a go-between. We offered him immunity if he would finger the guy from Kawamoto. He couldn’t describe him well enough for us to make a pickup. He was going to shake hands with him or touch him in some way as they left the building.”

“The Judas trick,” I remarked.

“Huh?” Hatfield looked puzzled.

McGonnigal smiled for the first time that afternoon. “The man I kiss is the one you want. You should’ve gone to Catholic school, Hatfield.”

“Yeah. Anyway, Folger must’ve told this guy Miyake we were closing in.” Hatfield shook his head disgustedly. “Miyake must be part of that group, just using an assumed name. We got a tail put on all of them.” He straightened up and started back toward the hall.

“How was Folger passing the information?” I asked.

“It was on microdots.”

“Stay where you are. I might be able to tell you which one is Miyake without leaving the building.”

Of course, both Hatfield and McGonnigal started yelling at me at once. Why was I suppressing evidence, what did I know, they’d have me arrested.

“Calm down, boys,” I said. “I don’t have any evidence. But now that I know the crime, I think I know how it was done. I just need to talk to my clients.”

Mr. and Mrs. Takamoku looked at me anxiously when I came back to the living room. I got them to follow me into the hall. “They’re not going to arrest you,” I assured them. “But I need to know who turned over the go board last week. Is he here today?”

They talked briefly in Japanese, then Mr. Takamoku said, “We should not betray guest. But murder is much worse. Man in orange shirt, named Hamai.”

Hamai, or Miyake, as Hatfield called him, resisted valiantly. When the police started to put handcuffs on him, he popped a gelatin capsule into his mouth. He was dead almost before they realized what he had done.

Hatfield, impersonal as always, searched his body for the microdot. Hamai had stuck it to his upper lip, where it looked like a mole against his dark skin.

IV

“How did you know?” McGonnigal grumbled, after the bodies had been carted off and the Takamokus’ efforts to turn their life savings over to me successfully averted.

“He turned over a go board here last week. That troubled my clients enough that they asked me about it. Once I knew we were looking for the transfer of information, it was obvious that Folger had stuck the dot in the hole under the board. Hamai couldn’t get at it, so he had to turn the whole board over. Today, Folger must have put it in a more accessible spot.”

Hatfield left to make his top-secret report. McGonnigal followed his uniformed men out of the apartment. Welland held the door for me.

“Was his name Hamai or Miyake?”

“Oh, I think his real name was Hamai-that’s what all his identification said. He must have used a false name with Folger. After all, he knew you guys never pay attention to each other’s names-you probably wouldn’t even notice what Folger called him. If you could figure out who Folger was.”

Welland smiled; his busy eyebrows danced. “How about a drink? I’d like to salute a lady clever enough to solve the Takamoku joseki unaided.”

I looked at my watch. Three hours ago I’d been trying to think of something friendlier to do than watch the Bears get pummeled. This sounded like a good bet. I slipped my hand through his arm and went outside with him.

Sara Paretsky