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“So you’d say that the man who printed this out knows computers.”

“Yeah, he’d have to, I guess. Only he didn’t print it out.”

“What?”

“You can’t print or download anything. Even with the print screen command. There’s a filter on the system-to prevent stalkers, you know. And you can’t crack it. It’s like what protects copyrighted books online.”

“Then how did he get the picture?” Rhyme asked.

Pam laughed. “Oh, he probably did what we all do at school if we want a shot of a cute guy or some weird Goth chick. We just take a picture of the screen with a digital camera. Everybody does that.”

“Sure,” Rhyme said, shaking his head. “Never occurred to me.”

“Oh, don’t worry, Mr. Rhyme,” the girl said. “A lot of times people miss the obvious answer.”

Sachs glanced at Rhyme, who smiled at the girl’s reassurance. “Okay, Pam. Thanks. I’ll see you later.”

“‘Bye!”

“Let’s fill in the portrait of our friend.”

Sachs picked up the marker and stepped to the whiteboard.

UNSUB 522 PROFILE

· Male

· Possibly smokes or lives/works with someone who does, or near source of tobacco

· Has children or lives/works near them or near source of toys

· Interest in art, coins?

· Probably white or light-skinned ethnic

· Medium build

· Strong-able to strangle victims

· Access to voice-disguise equipment

· Possibly computer literate; knows OurWorld. Other social-networking sites?

· Takes trophies from victims. Sadist?

· Portion of residence/workplace dark and moist

NONPLANTED EVIDENCE

· Dust

· Old cardboard

· Hair from doll, BASF B35 nylon 6

· Tobacco from Tareyton cigarettes

· Old tobacco, not Tareyton, but brand unknown

· Evidence of Stachybotrys Chartarum mold

Rhyme was looking over the details when he heard Mel Cooper laugh. “Well, well, well.”

“What?”

“This is interesting.”

“Be specific. I don’t need interesting. I need facts.”

“It’s still interesting.” The lab man had been shining a bright light on the slit-open spine of Robert Jorgensen’s book. “You were thinking the doctor was crazy, talking about tracking devices? Well, guess what? Oliver Stone may have a movie here-there is something implanted in it. In the spine tape.”

“Really?” Sachs said, shaking her head. “I thought he was nuts.”

“Let me see,” Rhyme said, his curiosity piqued and skepticism on temporary hold.

Cooper moved a small high-definition camera closer to the examining table and hit the book with an infrared light. It revealed underneath the tape a tiny rectangle of crisscrossed lines.

“Take it out,” Rhyme said.

Carefully Cooper slit the spine tape and removed what appeared to be an inch-long piece of plasticized paper printed with what looked like computer circuit lines. Also, a series of numbers and the manufacturer’s name, DMS, Inc.

Sellitto asked, “The fuck is it? Really a tracking device?”

“I don’t see how. There’s no battery or power source that I can find,” Cooper said.

“Mel, look up the company.”

A fast business search revealed it was Data Management Systems, based outside Boston. He read a description of the outfit, one division of which manufactured these little devices-known as RFID tags, for radio frequency identification.

“I’ve heard about those,” Pulaski said. “It was on CNN.”

“Oh, the definitive source for forensic knowledge,” Rhyme said cynically.

“No, that’s CSI,” Sellitto said, drawing another aborted laugh from Ron Pulaski.

Sachs asked, “What does it do?”

“This is interesting.”

“Again, interesting.”

“Essentially it’s a programmable chip that can be read by a radio scanner. They don’t need a battery; the antenna picks up the radio waves and that gives them enough juice to work.”

Sachs said, “Jorgensen was talking about breaking off antennas to disable them. He also said you could destroy some of them in a microwave. But that one”-she gestured-“he couldn’t nuke. Or so he said.”

Cooper continued, “They’re used for inventory control by manufacturers and retailers. In the next few years nearly every product sold in the U.S. will have its own RFID tag. Some major retailers already require them before they’ll stock a product line.”

Sachs laughed. “That’s just what Jorgensen was telling me. Maybe he wasn’t as National Enquirer as I thought.”

“Every product?” Rhyme asked.

“Yep. So stores know where the stuff in inventory is, how much stock they have, what’s selling faster than other things, when to restock the shelves, when to reorder. They’re also used for baggage handling by airlines so they know where your luggage is without having to visually scan the bar code. And they’re used in credit cards, driver’s licenses, employee IDs. They’re called ‘smart cards’ then.”

“Jorgensen wanted to see my department ID. He looked it over real carefully. Maybe that’s what he was interested in.”

“They’re all over the place,” Cooper continued. “In those discount cards you use in grocery stores, in frequent-flier cards, in tollbooth smart pass transponders.”