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"Of course not. He could hate popcorn. Maybe he works in a popcorn factory or movie theater. Just add 'popcorn.' " Rhyme looked at the chart. "Now let's find out about that other trace. The off-white stuff."
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sp; Cooper ran another GC/MS test. The results indicated that it was sucrose and uric acid.
"The acid's concentrated," the tech said. "The sugar's pure--no other foodstuffs--and the crystalline structure's unique. I've never seen it milled like that."
Rhyme was troubled by this news. "Send it to the FBI's bomb people."
"Bomb?" Sellitto asked.
Rhyme said, "Haven't been reading my book, hmmm?"
"No," the big detective shot back. "I've been busy catching bad guys."
"Touche. But it'd be helpful to at least take a look at the headings from time to time. As in 'Homemade Explosive Devices.' Sugar's often an ingredient. Mix it with sodium nitrate and you've got a smoke bomb. With permanganate, it's a low explosive--which can still do a lot of damage if you pack it into a pipe. I'm not sure how the uric acid figures but the Bureau's got the best database in the world. They'll tell us."
The FBI's lab is available to handle evidence analysis for state and local law enforcers, at no charge, provided that the requesting agency agrees to two things: to accept the FBI's results as final and to show them to the defendant's lawyer. Because of the Bureau's generosity--and its talent--the agents are inundated with requests for assistance; they run more than 700,000 analyses a year.
Even New York's finest would stand in line like everyone else to get this bit of sugar analyzed. But Lincoln Rhyme had an in--Fred Dellray, a special agent in the FBI's Manhattan office, often worked with Rhyme and Sellitto and he carried a lot of weight in the Bureau. Equally important was the fact that Rhyme had helped the FBI set up its PERT system--the Physical Evidence Response Team. Sellitto called Dellray, who was presently on the task force checking out those reports of potential terrorist bombings in New York. Dellray got on the horn to FBI HQ in Washington, D.C., and within minutes a technician had been recruited to help on the Unsub 109 case. Cooper sent him the results of the analyses and compressed digital images of the substance via secure email.
No more than ten minutes passed before the phone rang.
"Command, answer," Rhyme snapped into his voice recognition control system.
"Detective Rhyme, please."
"This's Rhyme."
"I'm Examiner Phillips down on Ninth Street." Washington's Ninth Street, he meant. FBI headquarters.
"What do you have for us?" Rhyme asked briskly.
"And thanks for calling back so fast," Sachs said quickly. She sometimes had to run interference for Rhyme's bluntness.
"No worries, ma'am. Well, I was thinking it was pretty odd, what you sent down. So I sent it to Materials Analysis. That did the trick. We've got a ninety-seven percent certainty as to the substance."
How dangerous was the explosive? Rhyme wondered. He said, "Go ahead. What is it?"
"Cotton candy."
That wasn't a street name he knew. But there were a number of new-generation explosives that had detonation rates of thirty thousand feet per second, ten times the speed of a bullet. Was this one of those? He asked, "What're its properties?"
A pause. "It tastes good."
"What's that?"
"It's sweet. It tastes good."
Rhyme asked, "You mean it's real cotton candy, like you'd find at a fair?"
"Yeah, what'd you think I meant?"
"Never mind." Sighing, the criminalist asked, "And the uric acid was from his shoe when he stepped in some dog pee on the sidewalk?"
"Can't say where he stepped on it," the examiner said, displaying the precision the Bureau was known for. "But the sample does test positive for canine urine."
He thanked the man and disconnected. He turned to the team. "Popcorn and cotton candy on his shoes at the same time?" Rhyme mused. "Where'd that put him?"
