that had made Danny who he was. I rinsed the bullet, then cleaned it thoroughly in a weak solution of Clorox, because body fluids can be infectious and are notorious for oxidizing metal evidence.
At almost noon, I double-bagged it in plastic envelopes and carried it upstairs to the firearms lab, where weapons of every sort were tagged and deposited on countertops, or wrapped in brown paper bags. There were knives to be examined for tool marks, submachine guns and even a sword. Henry Frost, who was new to Richmond but well known in his field, was staring into a computer screen.
“Has Marino been up here?” I asked him as I walked in.
Frost looked up, hazel eyes focusing, as if he had just arrived from some distant place where I had never been.
“About two hours ago.” He tapped several keys.
“Then he gave you the cartridge case.” I moved beside his chair.
“I’m working on it now,” he said. -The word is, this case is a number-one priority.”
Frost, I guessed, was about my age and had been divorced at least twice. He was attractive and athletic, with well-proportioned features and short black hair.
According to the typical legends people always claimed about their peers, he ran marathons, was an expert in whitewater rafting, and could shoot a fly off an elephant at a hundred paces. What I did know from personal observation was that he loved his trade better than any woman, and there was nothing he would rather talk about than guns.
“You’ve entered the forty-five?” I asked him.
“We don’t know for a fact it’s connected to the crime, do we?” He glanced at me.
“No,” I said. “We don’t know for a fact.” I spotted a chair with wheels close by and pulled it over. “The cartridge case was found about ten feet from where we believe he was shot. In the woods. It’s clean. It looks new. And I’ve got this.” I dipped into a pocket of my lab coat and withdrew the envelope containing the Black Talon bullet.
“Wow,” he said.
“Consistent with a Winchester forty-five?”
“Man alive. There is always a first time.” He opened the envelope and was suddenly excited. “I’ll measure lands and grooves and tell you in a minute whether it’s a forty-five.”
He moved before the comparison microscope and used the Air Gap method to fix the bullet to the stage with wax so he didn’t leave any marks on metal that weren’t already there.
“Okay,” he talked without looking up, “the rifling is to the left, and we’ve got six lands and grooves.” He began measuring with micrometer jaws. “Land impressions are point oh-seven-four. Groove impressions are point one-five-three. I’m going to enter that into the GRC,- he said, referring to the FBI’s computerized General Rifling Characteristics. “Now let’s determine the caliber,” he spoke abstractedly as he typed.
While the computer raced through its databases, Frost checked the bullet with a vernier measuring device. Not surprisingly, what he found was that the caliber of the Black Talon was .45, and then the GRC came back with a list of twelve brands of firearms that could have fired it. All, except Sig Sauer and several Colts, were military pistols.
“What about the cartridge case?” I said. “Do we know anything about it?”
“I’ve got it on live video but I haven’t run it yet.”
He returned to the chair where I had found him when I had first come in and began typing on a workstation connected by modem to an FBI firearms evidence imaging system called DRUGFIRE. The application was part of the massive Crime Analysis Information Network known as CAIN, which Lucy had developed, and the point was to link firearms-related crimes. Succinctly put, I wanted to know if the gun that had killed Danny might have killed or maimed before, especially since the type of ammunition hinted that the assailant was no novice.
The workstation was simple, with its 486 turbo PC connected to a video camera and comparison microscope that made it possible to capture images in real time and in color on a twenty-inch screen. Frost went into another menu and the video display was suddenly filled with a checkerboard of silvery disks representing other .45