The engine had been torn apart. A snapped drive belt hung out like the tongue of a dead steer. Wires were strewn everywhere, and finger-sized holes had been driven into plastic fluid tanks. Coolant and windshield cleaner still dribbled to the parking lot's concrete, and from the smell of it they were mixing with whatever gasoline had been in the tank.

Butters stared at it with wide eyes, panting. "My truck. They killed my truck."

"Looks like," I said, sweeping my gaze around.

"Why did they kill my truck?"

That heavy bass stereo kept rumbling through the October night. I paused for a second, focusing on the sound. It was changing, getting a little bit higher pitched with each beat. I recognized what that meant, and panic slammed through my head for a second.

Doppler effect. The source of the rumbling bass was coming toward us.

In the darkness of the industrial park's lanes a pair of headlights flashed on, revealing a car accelerating toward the Forensic Institute. The lights were spaced widely apart—an older car, and judging by the sound of the engine some kind of gas-guzzling dinosaur like a Caddy or a big Olds.

"Come on," I snapped to Butters, and started running to the lot next door, back to the Blue Beetle. We'd already been spotted, obviously, so I fired up my shield bracelet again, so that my hand looked like it had been replaced with a small comet. Butters followed, and I had to give the little guy credit—he was a good runner.

"There!" I shouted. "Get to my car!"

"I see it!"

Behind us the rumbling Cadillac swerved into the Institute's parking lot and lurched over a concrete-encased grassy median, sparks flying from its undercarriage. The car roared up onto the grass and skidded to a broadside stop. The door flew open and a man got out.

I got a half-decent glance at him in the backwash of the Caddy's headlights. Medium height at most, long, thinning hair, and pale, loose skin with a lot of liver spots. He moved stiffly, like someone with arthritis, but he hauled a long shotgun out of the car with him and raised it to his shoulder with careful deliberation.

I juked to one side so that I was directly between the driver and Butters, twisted at the hips, extended my arm behind me, and raised my shield. It flickered to life in a ghostly half dome just a second before one barrel of the shotgun bloomed with light and thunder. The shield flashed and sent off a cloud of sparks the size of a small house. I felt it falter through the damaged bracelet on my wrist, but it solidified again in time to catch the second blast from the gun's other barrel. The old man with the shotgun howled in wordless outrage, broke the barrel, and started loading in fresh shells.