“Well, if you could just check on her. See if she’s all right. But she can’t know I sent you. You mustn’t tell her I sent you.”

“Nailsworth, I’m an undercover cop. Being sneaky is what I do for a living.”

“Then you’ll do it?”

“If you can find something in these names that will bail me out, I’ll do it.”

“Thanks, Rivera.”

“Let’s finish this.” Rivera picked up a matchbook and read the name and address. The Spider typed the information, but as Rivera began to read the next name, he heard the Spider pause on the keyboard.

“Is something wrong?” Rivera asked.

“Just one more thing,” Nailsworth said.

“What?”

“Could you find out if she’s modeming someone else?”

“Santa Maria, Nailsworth! You are a real person.”

Three hours later Rivera was sitting at his desk waiting for a call from the Spider. While he was in the computer room, someone had left a dog-eared paperback on his desk. Its title was You Can Have a Career in Private Investigation. Rivera suspected Perez. He had thrown the book in the wastebasket.

Now, with his only suspect back out on the street and nothing forthcoming from the Spider, Rivera considered fishing the book out of the trash.

The phone rang, and Rivera ripped it from its cradle.

“Rivera,” he said.

“Rivera, it’s the Nailgun.”

“Did you find something?” Rivera fumbled for a cigarette from the pack on his desk. He found it impossible to talk on the phone without smoking.

“I think I have a connection, but it doesn’t work out.”

“Don’t be cryptic, Nailsworth. I need something.”

“Well, first I ran the names through the Social Security computer. Most of them are deceased. Then I noticed that they were all vets.”

“Vietnam?”

“World War One.”

“You’re kidding.”

“No. They were all World War One vets, and all of them had a first or middle initial E. I should have caught that before I even input it. I tried to run a correlation program on that and came up with nothing. Then I ran the addresses to see if there was a geographical connection.”

“Anything there?”

“No. For a minute I thought you’d found someone’s research project on World War One, but just to be sure, I ran the file through the new data bank set up by the Justice Department in Washington. They use it to find criminal patterns where there aren’t any. In effect it makes the random logical. They use it to track serial killers and psychopaths.”

“And you found nothing?”

“Not exactly. The files at the Justice Department only go back thirty years, so that eliminated about half of the names on your list. But the other ones rang the bell.”

“Nailsworth, please try to get to the point.”