The Devil Went Down to Austin - By Rick Riordan Page 0,74

six little mushrooms of copper and lead. The water had slowed them down so the shapes were almost uniform, the lower ends retaining perfect striations from the gun's barrel.

Lopez said, "They're just lovely. I figure we got about five more minutes before my sergeant gets here and makes us eat them."

We adjourned next door to Ben Quarles' office.

His window looked out on the asphalt parking lot, with a scenic side view of the DPS

loading ramp. The walls were adorned with framed black and white photos of Geronimo and John Dillinger. A John Prine song was playing from the computer's speaker. On the shelf above Quarles' desk was a line of fired bullets, four Larry McMurtry novels, a red roll of evidence tape circled around a Play Doh can.

Quarles picked up a Ziploc evidence bag from his desk, pulled out a slug. "This is the one from your victim's head. They cleaned the cooties off it."

He threw it to me before I could protest. I looked down at it - a little bit of metal, small as a gumdrop. Quarles plucked it back from my palm, then put the slug and a test slug from Garrett's Lorcin under his comparison microscope.

The machine looked like an oldfashioned icecream blender from a malt shop - same size, same turquoise and chrome finish. Quarles peered into the lens, turned some knobs, and said, "Yeah."

"Match?" Lopez asked.

"Come look."

Lopez did, then turned away, his face stony. "Go on, Navarre."

The image in the microscope was the left half of one bullet jutted up against the right half of another. You could turn a knob to move the dividing line, seeing less of one or the other bullet, comparing size, lines, markings. The bullets rotated slowly, and in the microscope light they were beautiful - gold and silver, like a piece of jewellery highlighted in a homeshopping ad.

I was no expert, but even I could see that the ridges - the lands and grooves - were fairly well aligned.

"You've got a rightsix GRC on the projectile that killed your friend," Quarles said.

"That's the pattern of the spin, and the number of lands and grooves. The projectile we just fired from the suspect's Lorcin is compatible. The damage to the projectile is bad enough that Lopez's man is right - I couldn't swear it's the same gun, but it's definitely from a similar .380."

I had expected that. It did not dampen my spirits too badly.

"The casing?" I asked, pushing my luck.

Quarles produced another Ziploc bag from his desk drawer, took out the brass I'd found in the lake. "It's a .380, all right. I put it in the microscope earlier - the crimp marks, where the projectile fits in the casing, line up beautifully. These marks are on the base of the projectile, you understand. Not as mangled as the top."

"Meaning?"

"The casing fits the projectile from the murder."

"A casing in the lake," I said, "maybe a hundred yards from the scene. It was picked up by the killer, dropped in the water during his exit."

Proof. Goddamn, perfect proof that Garrett was innocent. I looked at Lopez for vindication, but Lopez was staring at Quarles, apparently realizing there was more.

"Ain't had the real test yet," Quarles said. "The BOB markings - breech or bolt face - on this here casing. Give me one of the casings we just fired."

Lopez handed one over, and again Quarles adjusted the comparison microscope.

"Royal flush," he told us.

When it was my turn to look, I saw a circle of brass, cratered in the middle. Nothing exciting.

"The firing pin impression can't always tell you much," Quarles said. "They're circular, pretty much featureless, all the same. One thing, though - look at the outer ring. Those score marks. Now look at the other casing."

I saw what he was talking about - tiny breaks in the circle around the crater. They were similar on both casings.

I pulled away from the microscope. "But you said BOB marks all look the same."

"Mostly," Quarles amended. "For the same type of gun. Usually the firing pin strikes the back of a bullet in a Lorcin, you get a pattern of concentric circles that isn't very distinctive. This casing here, though, has some gaps in those circles - three distinctive gaps, maybe from the gun being cleaned improperly, I don't know. The thing is, your suspect's gun leaves the same kind of marks."

My chest turned cold. "Meaning - "

"This is ballistics. You don't usually get one hundred percent. But the chances of