Simone never drank on a job.
She climbed out. Before drugging him, she’d scanned to make sure no one was present. That was still true.
Ah. She gave a fast smile.
She had her answer.
A praying mantis.
That’s what the crane reminded her of. One summer, she’d discovered a creature on a railing of her family’s back porch. It was largely motionless, but swayed ever so slightly when ants wandered past filled with their driven but unknowable ant purpose.
She then closed the door of the van and walked to the driver’s side, climbed in. A look at her watch. She had a flirtatious neighbor to dispose of, and a vehicle to burn down to the rims. She’d have to leave now to get to the meeting on time.
15
Explosives, gasoline, poisons, and gunpowder are like fingerprints. Unique. Each sample discovered at a crime scene has characteristics that can lead directly back to a place of manufacture or sale, wholesale if not retail. And at that location, you might just find a portal to your unsub...
A passage from a chapter in Rhyme’s book on forensic analysis in which he discussed tracing substances by studying chemical composition. He went on to give an example. Gasoline.
It is around five percent alkanes; three percent alkenes; twenty-five percent isoalkanes; four percent cycloalkenes; twenty to fifty percent total aromatics. Then there are the additives: blending agents — anti-knock substances, antioxidants, metal deactivators, lead scavengers, upper-cylinder lubricants, detergents and dyes — there are literally a thousand different substances in any particular brand of gasoline.
Unique...
Not so with the substance that Unsub 89 was using to bring down the city’s cranes.
Hydrofluoric acid contains hydrogen and fluoride. And, when diluted, water. No garnish.
If there was anything that might guide their search for a source, it was the concentration.
Yet even that qualifier was not paying off.
The canvassers in Queens, along with Cooper and Sachs, had found eighteen companies in the tri-state area that sold the chemical in the rich concentration of the substance their unsub had used.
She cleared her throat yet again, glanced toward the oxygen, but decided against it. Rhyme was keeping an eye on her. HF exposure through the lungs, as he’d told those in the parlor not long ago, acts more immediately than through the skin. But that’s not to say that there wasn’t a residue of the acid slowly working its way through the small tubes of bronchi and the even tinier bronchioles.
“Sachs? Did they X-ray?”
“No.”
Of course they wouldn’t, not in the field... But that wasn’t really the meaning of his question. He was asking her if it wouldn’t be better to go into the ER and get one done in radiology.
She turned her attention back to the phone.
“Found two more suppliers,” Cooper called from the other side of the glass partition. He recited the names and addresses, and Sachs recorded them elegantly on the murder board.
Nineteen, twenty...
Wonderful, thought Rhyme, in his most sardonic mode.
And then too, he reflected, even if they found the supplier, the perp would’ve taken precautions to hide his identity, paying cash.
Soon the tally hit thirty-seven and finally stalled.
Rhyme said, “Didn’t know it was that common.”
In the sterile portion of the parlor, Cooper, reading from one of the most reliable sources in law enforcement — Google — said, “It’s one of the fastest-growing industrial products on the market.” He went on to explain that the demand for HF acid rose about ten percent a year and would soon top a billion dollars in revenue. “It’s used for more things than you’d think. Etching, cleaning, refining gas, making Teflon and fluoxetine — Prozac. You ever get depressed, Lincoln?”
“No time.”
“To get depressed?”
“No time for your trade association’s up-with-HF spiel.”
So it was as impossible to isolate a source of the acid as it was to source an unregistered Smith & Wesson on the street.
He scanned the chart. Albert Industrial Products to Zeigler Chemicals...
Hell.
Rhyme took a call from Lyle Spencer.
“Lincoln.”
“What did you find out about the politician that I should know everything about but do not?”
The man gave a brief laugh. “I’m convinced Representative Cody didn’t have anything to do with it. The Kommunalka Project just dug up a statement from a paper he wrote years ago. His body language? It told me that the attack was a surprise to him.”
Unlike witnesses’ observations and psychological profiling, kinesic analysis done by an expert was more or less reliable, Rhyme felt. A colleague in California, Kathryn Dance, working for the CBI, had proven to him on several occasions that techniques were reliable in painting interrogees credible or not.
So, the congressman was off the persons-of-interest list.
Spencer continued, “He said he’s never heard of any violent side to the affordable housing movement. But he knows activists. He’s going to contact them.”
“All right,” Rhyme muttered. Another dead end. Or at least a badly wounded one.
After they disconnected, Sachs wrote the detective’s conclusions on the whiteboard, then took a call. “Detective Sachs... That’s right...”
Rhyme’s eyes strayed out the window. From this narrow view alone, he could see three cranes lording over the East Side, all motionless. The stillness was eerie.
Sachs tucked her phone away and, after a blast of oxygen, said, “Downtown. Maybe a witness from the jobsite. I’m going to talk to him.” After another blast of oxygen, she pulled on her black leather jacket and walked into the front hall. A pause. She returned and, without a word to or glance at anyone else, grabbed the tank and hurried outside. A moment later, Rhyme heard her car’s throaty engine fire up. The gruff sound reminded him of her voice, with the acid exposure.
The sound had just disappeared when Rhyme’s phone sounded. It was Sellitto.
“Lon.”
“Gotta tell you, Linc. Just heard.”
“Another one? A crane?”
The deadline in the demand was tomorrow, but extortionists and kidnappers are known to improvise.
“No. It’s Andy Gilligan. He’s dead. Shot.”
Rhyme and Mel Cooper shared a glance.
“Details?”
“Could be a pro job. Double tap, chest, then face. Vacant lot, Lower East Side.”
“What was he doing there?”
“No idea. Supervisor doesn’t know either. No wits and the respondings said his wallet, cash and car keys — to a new Lexus — were on him. The car was there too.”
“And his caseload?”
“Some minor OC stuff. A jacking or two. Some missing shipping containers. Then what we’re working together: Structures and Engineering.”
“Where’s Pulaski?”
“He’s on his way to you right now.”
“Text me the address of the Gilligan scene. Pulaski too.”
“You got it. Oh, and Linc. I talked with Ron about what you and me were saying? He’s okay with it.”
“Good to know.”
The men disconnected and Rhyme ordered his phone to call Pulaski.
One ring later: “Lincoln. I’m on my way—”
“There’s a scene I need you to run. Lon’s texting you the address.”