Four fifty-five-gallon drums sat bolted into a welded steel rack behind the cab. They were painted industrial gray, their factory markings sanded down to bare, scored metal, but fresh yellow stencils had been sprayed across the lower chimes: MIS-VALVE-04. Mercer Industrial Services.
And strapped between the third and fourth drums, wedged tight beneath a rubber tie-down strap, was a battered olive-drab aluminum field case.
My breath caught in my throat. The latch hinges were corroded from river spray, but on the corner of the lid, scratched deep into the green anodized finish with the tip of a pocketknife, were the letters I had watched my brother carve at our kitchen table nine years ago: D. M. 09.
"Miller," I said, my voice barely above a whisper. "Cut the strap."
"Don't touch it," Garrett commanded.
The chief didn't shout. He took one step off the tailgate, his boots planting hard into the concrete. His right hand dropped, and this time his thumb found the thumb-break snap of his service weapon. The heavy leather popped open with a sound like a dry twig snapping.
"You've verified the cargo carries an industrial designation," Garrett said, staring directly at me, his jaw clenched so hard his cheek muscles twitched. "That constitutes a municipal environmental violation by the hauler. It is now an active local investigation. Step back from the bed, Agent Mercer."
"That case belongs to David," I said, refusing to back up an inch. "That case was assigned to the Mercer County Utility Authority. It has an active federal calibration tag on the handle. If you pull that weapon, Garrett, you aren't defending county jurisdiction. You're committing armed interference with an ongoing felony homicide inquiry."
"Nobody was murdered," Garrett snarled, his composure finally shredding at the edges. "David was a technician who panicked over numbers he didn't have the stomach to manage. He ran his mouth to the utility board, he ran his mouth to the state water board, and when nobody wanted to shut down the county's largest industrial employer over a five-part-per-million variation in the sediment traps, he tried to play the hero."
"He didn't run," I said.
"He went into the river because he wouldn't stay in his truck," Garrett said, and for the first time, the truth slid out between his teeth like poison. "He knew the purge was running at two in the morning. He had the schedule on his phone. All he had to do was sit in his warm cab, let the valve cycle for twenty minutes, and sign the intake ticket like every other night supervisor has done for twenty years. But he went down to the weir gates with that damn box in his hands."
Miller stopped breathing. The bolt cutters dropped four inches, their heavy tips resting against his boot laces. "Chief... you said David fell from the catwalk because of the black ice. You told the board his boot slipped on the grating."
"Shut up, Miller," Garrett hissed without turning his head.
"You told David's mother he must have lost his footing in the dark," Miller whispered, his voice rising, cracking against the high, steel roof of the sally port. "I was on the boat ramp. You told me the current took him past the second bend before we could get the search lamps set up."
"I told you what you needed to know to keep your pension," Garrett barked. He turned half an inch toward his deputy, his weapon still gripped in the half-drawn leather. "You want to stand there and argue with me while this federal outsider builds an obstruction case against every man on the roster? She doesn't give a damn about this precinct. She'll take the files to Roanoke, get herself a commendation from the regional director, and leave you and Vance to explain to the grand jury why you helped tow an unregistered flatbed into Bay Four."
I didn't wait for Miller to decide. I climbed up onto the steel wheel well, reached over the rim of the bed, and grabbed the handle of David's case.
The aluminum was freezing to the touch. The rubber strap was brittle with road salt; I pulled it hard against the buckle until the aged webbing tore free with a dry screech. I dragged the case onto the dropped tailgate and hit the twin latches with the heels of my palms.
The lid popped open.
Inside, resting in dense foam cutouts, was the Model Seven Hydro-Scan. The LCD glass was spider-webbed across the corner where it had taken a direct impact, but the internal battery indicator was still glowing a faint, amber green. David had configured the unit with a field-hardened data buffer that ran on a secondary lithium cell—a backup power line he had wired himself so sudden power cuts at the pumping stations wouldn't erase his field calibration tests.